Kalendis Release Notes (What's New)

Version 9.837(1557), Revised Jan 1, 2012 (Sym454) = Jan 1, 2012 (Sym010)

Symmetry454 and Symmetry010 calendars: show the week number in 4-week groups since the calendar epoch.
This new feature is useful for regularly spaced payments such as payroll, rentals, loans.
Kalendis now saves and restores its window state and position between sessions.
Bug fixes in Locales menu:
- New York City was previously set to time zone +5, now corrected to -5 hours.
- Disabled daylight saving time for Bagota, Lima, Mecca, Hanoi, Iceland, Beijing, Babylon, Tehran, Seoul, Tokyo.
  (Hanoi, Seoul, Tokyo are built-in locales that don't appear on the locales menu but are used for the Oriental lunisolar calendars.)
- Changed Yellowknife name to Yellowknife, NWT, Canada.
- Corrected spelling of Columba to Columbia.
Changed the "Adjust for Daylight Saving Time" checkbox caption to show "No Daylight Saving Time" when a locale with DST disabled is selected.
Reports in general:
- File names: changed "_" to "-" between words of file names, as recommended by Google.
- Changed most HTML tags to lowercase.
- Changed table borders to use proper style syntax.
Hebrew Zmanim reports:
- Boldfaced the molad announcement line to make it easier to find.
- For equinoxes and solstices show Gregorian rather than Hebrew dates.
- Last column was formerly "3 Dim Stars", now renamed to "3 Stars". For the end of Shabbat or Yom Tov it continues to use 3 dim stars [Tucazinsky], but now for other days including the end of fast days (except Yom Kippur) it uses 3 bright stars [Vilna Gaon].
- Added Sigd festival (Beta Israel) on the 29th of Cheshvan.
Clicking on the Lunar form: in addition to the mean J2K lunation number, it now copies to clipboard the Nth new moon number (from Dershowitz & Reingold in "Calendrical Calculations"), as well as the Brown, Goldstine, Hebrew, and Islamic lunation numbers.
Adjusted clipboard position and height to allow for two lines to be visible, changed its background shading from white to the same grey as its host window background.
Chinese calendar: allocated more space for the Sexagenary Day label.
Hebrew possible weekdays: major new built-in report calculates the exact full-repeat-cycle frequency (in 689472 years) of all possible weekdays for all possible traditional Hebrew calendar dates.
Twilight report: Fixed USNO URL (file extension was .html, changed to .php).
Hebrew calendar info button:
- For dates in Adar show frequencies in Adar and also for Adar combined with Adar Rishon (useful for yahrzeits).
- For dates in Adar Rishon show frequencies in Adar Rishon and also for Adar combined with Adar Rishon (useful for yahrzeits).
- For dates in Adar Sheini show frequencies in Adar Sheini and also for Adar combined with Adar Sheini (for yahrzeits and events such as Purim).
- For days 1 to 29 of Adar or Adar Rishon show "all years" frequencies as referring to that day of Adar or Adar Rishon.
- For Adar 1 and Adar 2 show weekday frequencies twice: per common or leap year, then per all years.

Version 9.780(1500), Revised Nov 13, 2010 (Sym454) = Nov 11, 2010 (Sym010)

Reduced Gregorian and Roman date field font sizes from 12 to 11 points so that the longest dates will display properly.
Reports --> Hebrew --> Tekufot:
- +60 days later for Tekufat Tishrei now shows on a new line.
- Minor HTML correction: Time column heading was missing its end tag.

Version 9.778(1498), Revised Nov 3, 2010 (Sym454) = Nov 1, 2010 (Sym010)

Reports --> Hebrew --> Tekufot:
- Added submenu for choice of zone, mean solar, or local apparent time. Only zone time includes DST adjustment, if enabled. To generate a report in Jerusalem mean solar time, select Jerusalem as the locale, navigate to the desired year, then choose "by Local Mean Solar Time" from the Tekufot report submenu. For universal time (prime meridian) choose instead Greenwich as the locale.
- The report now shows Birchat HaChamah for Tekufat Nisan when applicable.
- For Tekufot of Amorah Shmuel now also shows the Gregorian and Julian dates, and for Tekufat Tishrei also shows the Gregorian and Julian dates 60 days later.
- Corrected Rambam epoch slightly, now assuming that it refers to exactly 18:00h Jerusalem mean solar time.
- Tables in report now have ToolTip text for Time column, and no text wrapping of cells. HTML syntax corrections.
- Rearranged column sequence.
- Report now uses matching season colour for Tekufat Adda and Tekufat Shmuel.
- Fixed CSV and TAB formats.
- If printing to a color printer, note that some web browsers don't print the colors properly, especially those of the table borders, so check your Print Preview first. If the colors are not rendered properly in Print Preview then try a different web browser.
Gregorian and Symmetry calendars: added USA Black Friday as the Friday after USA Thanksgiving.
Yerm era report:
- Revised URL for NASA Delta T polynomials.
- If output file exists and user wants to use it as is, display it in web browser.
- If Offset is not zero then put "_plus" in front of it instead of "+" in file name, for UNIX compatibility (web sites).
Gregorian and Julian calendar info text reworded, and added Easter computus info (not shown for Revised Julian because practise varies).
Symmetry calendar: Added comment documenting mean month for Symmetry Easter computus based on 4366 lunar months in 353 years.

Version 9.770(1490), Revised Jul 5, 2010 (Sym454) = Jul 5, 2010 (Sym010)

Added to Options menu: Even-Length Symmetric Cycles... command so that the user can choose whether even-length almost symmetrical leap cycles shall have the middle two years leap then non-leap (default) or non-leap then leap. These are the only 2 non-symmetrical years in the such cycles. For more information, see the discussion of symmetrical leap cycles on our "Solar Calendar Leap Rules" web page.
Many minor improvements to the reports that list leap years for various calendars and leap cycles.
Removed submenu for reporting Symmetry calendar leap years. Instead:
- When reporting simple fixed arithmetic leap cycles, now starts at beginning of cycle containing currently displayed year.
- For astronomical or linar approximation leap rules, listing now starts from the first year of the century that contains the presently displayed year.
Symmetry calendar experimental leap rule equinox and solstice average alignment revisions:
- NE79 and MNE79 rules renamed to NE80 and MNE80, respectively, and changed so that astronomical northward equinox now averages to midnight starting the 80th day of the year (Sym454 Mar 17th) at Jerusalem. Likewise LANEY leap rule offset changed from +0.9 to +0.4 to accomplish a similar change.
- NS171 and MNS171 rules renamed to NS174 and MNS174, respectively, and changed so that astronomical north solstice now averages to midnight starting the 174th day of the year (Sym454 Jun 20th) at Jerusalem. Likewise LANSY leap rule offset changed from +3 to +0.4 to accomplish a similar change.
- For more information about the above leap rules, see our "Solar Calendar Leap Rules" web page.
Added the symmetrical 1803-year cycle to the list of experimental Symmetry calendar leap rules. This cycle is of interest because it contains exactly 22300 lunar months = 100 saros intervals, useful for implementing a simple, exceptionally short (1803 years) Easter computus. For more information, see the discussion of the 1803-year leap cycle on our "Solar Calendar Leap Rules" web page.

Version 9.747(1467), Revised Feb 17, 2010 (Sym454) = Feb 15, 2010 (Sym010)

Added display of cycle information to the Symmetry454 / Symmetry010 and Gregorian windows.
This shows the year number within the leap cycle, and the cycle number since the epoch.
Sym454 and Sym010 now separately remember their leap week mode (append-to-December to stand-alone at end-of-year), with the default for Sym454 being append-to-December and the default for Sym010 being stand-alone at end-of-year.
Clicking on "ISO day" or "Gregorian day" now includes "day + remaining = year length" in the clipboard copy.
At the end of generating most reports the path to the report file is now shown in quotes and is also copied to the clipboard so that the user can paste the path into "My Computer" or "Windows Explorer" or into a document (exceptions: "Twilight & Astronomy" reports and the Hebrew calendar "Zmanim" reports, both of which typically generate multiple files including an index file and a report for each month of the currently displayed year).
The "Yerm Lunar Calendar" button caption now changes to "Progressive Yerm Era" when that is in effect, and when the user clicks on the date field beside it the date format is now copied to the clipboard along with the date, either "cc-yy(mm(dd" or "ee-yy(mm(dd", depending on whether the calendar is using a fixed cycle or a progressive yerm era list, respectively.
The path to the Progressive Yerm Era list is now remembered along with the user-defined locales, so it is no longer lost if the user clears all preferences.
When the user chooses to generate a Progressive Yerm Era list, if the file already exists in the selected directory then Kalendis now offers to use it as is, cancel, or continue generating the list. Using an existing list makes it faster to switch between yerm era lists, or for multiple users to share a list.
Reduced the font size for the "Clipboard" line and for the verbose form of Bahá'í date.

Version 9.741(1461), Revised Feb 10, 2010 (Sym454) = Feb 8, 2010 (Sym010)

Changed the ISO date separator from a barely visible raised dot (which didn't display properly on some international systems) to a simple dash (which is the separator that is used in the ISO standard).

Version 9.740(1460), Revised Feb 2, 2010 (Sym454) = Jan 30, 2010 (Sym010)

The Symmetry010 calendar is no longer restricted to "Experiment" mode, the user can switch between the Symmetry454 and Symmetry010 calendars at any time.
The new Kalendis installer is now much simpler to use, because it launches the setup program automatically and cleans up when done.
Fixed bug: repeatedly toggling the Julian calendar "Revised Julian" mode on/off was messing up the "Events" window.

Version 9.735(1455), Revised August 19, 2009 (Symmetry454) = August 14, 2009 (Gregorian)

Bug fixes:

Improved the way that complicated astronomical values are cached, now more robust if user changes the fixed day numbering epoch.
Force 24h time format for all displays and reports (the 24h checkbox is now permanently marked).
Hebrew Moladot reports: In TAB/CSV output format the "First See Crescent" column now includes the Gregorian year, to prevent an external spreadsheet or similar program from defaulting to the current year instead of the intended year.
Fixed: If the user exited from Kalendis using the File --> Quit... --> and Save Preferences command, the preferences actually got corrupted because they were saved after all of the calendar windows were closed.
Fixed: If many events were listed and the Events window had a vertical scroll bar, then the user scrolled to the end of the list and did anything to cause the list of events to be updated, Kalendis crashed.
Fixed: The default appearance of Windows XP employs window title bars that have an exaggerated height, which increases the height of every window in Kalendis, thus when all windows were open in their default positions they didn't fit within a 1024 by 768 minimum screen resolution.
Believed fixed: A "glitch" involving the Month view: If the Kalendis Month view was the active window and the user chose any command that jumped to another date/time, such as almost any command from the "Previous" or "Next" menus, then the time portion got dropped and the displayed moment was as of midnight on the same day. All Kalendis windows and the Events list also got updated four times.
Fixed minor bug: Clicking on the "Univ Time" box caused the time corresponding to the fractional part of the presently displayed Fixed Day Number to be copied to the system clipboard as Universal Time, Standard Time, Mean Solar Time, and Local Apparent Time. The time shown beside "Standard" was actually Daylight Saving Time when "Adjust for Daylight Saving Time" was checkmarked and displayed in red text (indicating that Daylight Saving Time applies to that moment). This new release of Kalendis copies "DST" or "Standard", as appropriate.
In the unlikely event that Kalendis crashes upon launch, then upon the next launch it first deletes all preferences, in case a registry corruption caused the prior crash. Thus if Kalendis does fail to fully launch, it is worthwhile to try it again (once).

New features:

Added traditional oriental lunisolar calendars: Chinese, Korean, Vietnamese, Japanese, and can Report the Events for Year for these calendars, with or without sexagenary day numbers and names.
Added Karl Palmen's Yerm Lunar Calendar, and progressive yerm era variants of it generated using the Reports --> Yerm Eras for mean Lunar... command, or a traditional molad yerm era variant of it generated using the Reports --> Hebrew... --> Yerm Eras for Tradtional Molad command. The "Previous" and "Next" menus now show "Yerm" and either "Fixed Yerm Cycle" or "Progressive Yerm Era", depending on the current configuration of the Yerm Lunar Calendar.
There is now a separate Lunar window, showing lunar Age, Phase, Distance, Ecliptic Longitude, Ecliptic Latitude, and Declination, along with the yerm date of the presently configured Yerm Lunar Calendar. Clicking on these fields copies their contents, usually in higher precision and sometimes with extra information, to the system clipboard.
Added Vedic Tithi to the "Previous" and "Next" menus
(after adding this feature I regretted doing it, but left it in because it was a lot of work).
Solar Declination is now displayed below Solar Longitude.
The Symmetry454 calendar and variants now employ symmetrical leap cycles for fixed arithmetic cycles, and their mean years are now quoted to the exact fraction of a second.
New commands related to symmetrical leap cycles added to the Previous and Next menus for jumping to the first year of the previous or next symmetrical leap cycle. If starting the jump from any moment within the first year of a cycle, finds the same moment in the year being jumped to, which is a quick way to watch what happens to the solar longitude drift from cycle-to-cycle. If starting the jump from any other point in a cycle, jumps to the beginning of the current or next leap cycle.KalendisKalendis
Rearranged Sym454 window to move the "Experiment" checkbox from bottom right to top right, and "Start On" combo box (pull-down list of weekday choices) from middle right to bottom right.
The Symmetry454, Gregorian, ISO, and Hebrew calendar windows now show day number within year, days remaining, and length of year.
The Symmetry454 window now supports multiple quarter-structure variants. Click on the "Experiment" checkbox, then each time the user clicks on the "Quarters" frame at the top right of the window, toggles to the next structure. In 4+5+4 mode it will go through 4+4+5, then 5+4+4, then back to 4+5+4. In 30+31+30 mode it will go through 30+30+31, then 31+30+30, then back to 30+31+30. Holidays and Events adjust accordingly.Kalendis
File menu now has a new Jump By command that prompts the user for the size of date jump (negative or positive, whole number or with decimal fraction). The jump unit depends on what is selected on the Step menu (Days, Weeks, Lunar Cycles, Solar Years, Decades, Centuries).
New Symmetry454 calendar report: Convert Symmetry454 List, generates a quick reference sheet useful for manual conversion of dates to and from Symmetry454 dates for a single calendar year. The other calendars that are listed on this report depend on which calendar windows are open at the time that the report is generated, but can include ISO, Gregorian, Julian (traditional or revised), an oriental lunisolar calendar (Chinese, Korean, Vietnamese, or Japanese), or any supported variant of the Bahá'í calendar.Added to Previous and Next menus: First Visible Crescent (info displayed in title bar of Hebrew calendar window).
For the Symmetry454 calendar (and variants), when the date is within a leap week the Events list will show "Semaine de la Révolution (Leap Week)" as an event. This is intended in the sense that the purpose of the leap week is to keep the calendar in sync with Earth's revolution around Sun.
Symmetry454: For the non-fixed Easter date now uses the Gregorian Easter computus only for the 71/400 leap or ISO leap rules, because they have calendar mean years identical to the Gregorian calendar mean year. For all other leap rules the Symmetry454 calendar now uses the Uniform Easter, based on astronomical algorithms. Added Uniform Easter to Previous / Next menus.
Symmetry454: removed the RJiso and 559/3150 leap rules, and disabled astronomical and mean astronomical leap rules except for those that use zero offset from the New Year moment (BNY, MOY, RAY).
Disabled support for The World Calendar and the 13-Month Calendar.
Added more map servers to choose from, most comprehensive is the WikiMedia / GeoHack.
Changed default map server from MapQuest to Google Maps.
The Hebrew cycle status information button (to the left of the question mark button in the Hebrew calendar window) now shows possible weekday statistics for the currently displayed Hebrew day and month.
Hebrew Moladot reports: added the moment of the actual NEW Moon and FULL Moon, in local clock time, so that the user will know the true interval over which the lunar phase is waxing, added "1st See Crescent" column showing the Gregorian date on which at sunset it is predicted that the new lunar crescent might first be visible, if local conditions permit. (It will not be possible to see the crescent on prior days.) Also added "Duration 29 days +" column showing the duration of each lunar cycle of the Hebrew calendar year, in terms of the hours and minutes (HH:MM) in excess of 29 days.
For Progressive Moladot this version employs the mean lunar conjunction, calculated for Universal Time according to the math given on my web page "Length of the Lunar Cycle" at <http://www.sym454.org/lunar/>, then it adds 2h 37m to refer the moment to a local mean time clock at the meridian that is mid-way between the Nile River and the end of the Euphrates River (at the point where it joins the Tigris River). This mid-point is approximately at the place where the modern borders of Jordan, Saudi Arabia and Iraq converge. The calculated progressive molad moments differ by about +16 minutes (in the present era) from that which would be obtained using the progressive molad arithmetic as given on the Rectified Hebrew calendar web page, which is referred to the meridian of Jerusalem.
New report related to the Hebrew calendar: Tekufot (seasons), click here for an example report.
Hebrew calendar Zmanim reports (ritual times of day) now show the moments of the astronomical equinoxes and solstices.
User-Defined Locales: added 4 elevation scroll controls that handle 1000s, 100s, 10s, and units. Clicking on Time Zone frame or Elevation frame is now a quick way to zero the time zone or elevation, respectively. Increased the elevation limit from 4000 to 12500 metres to allow calculation of sunrise or sunset for a cruising aircraft.
Former "Export" menu renamed to "Reports".
"Change Background Color" and "Change Foreground Color" are now added to the bottom of the "Window" menu.
Most dialog boxes now prompt the user "Copy to Clipboard?" with "Yes" and "No" buttons. Since the "No" button is the default, simply pressing the Enter key will dismiss the dialog without doing anything.
Added to built-in locales: Beijing, High Point, Nile-Euphrates Midpoint (at latitude of Jerusalem), Montreal.
The User-Defined Locales form now allows the user to paste or type in decimal values of latitude or longitude. Click in the areas on the right side of that window where the decimal values are displayed.
Minor wording improvements and enhancements of various reports.

Version 9.336(1058), Revised November 21, 2006 (Symmetry454) = November 19, 2006 (Gregorian)

Bug fixes:

Monthly view now properly adjusts its height to take account of extra-height form title bars used by default in Windows XP.
Preferences loading routine is now more robust, to avoid a run-time error at program launch reported by some users.

New features:

Added to Links menu: Lengths of the Seasons.

Version 9.330(1052), Revised November 11, 2006 (Symmetry454) = November 9, 2006 (Gregorian)

Bug fixes:

Previous/Next New/Full Moon commands now work properly with non-Gregorian fixed day numbering epochs.
The monthly calendar view of the Julian and Roman calendar now properly crosses from year 1 BC to 1 AD forward or backward.
Torah portions are now suppressed for Hebrew dates prior to the era of the Maccabees.
Improved rounding use for separated times and angles (was occasionally causing some odd decimal points to be displayed).
Switching the locale from a built-in locale to a user-defined locale that was originally copied from that same locale was sometimes not detected as a locale change, now fixed.

New features:

It is now possible to run Kalendis under Linux or MacOS X, click here for instructions.
The Persian Calendar (modern astronomical), and Persian Leap Years export report.
All calendars and their monthly views and events are now color-coded, and the user can change a calendar's background color by double-clicking on its date, or the foreground (text) colour by right-clicking on its date. There is a new "Undo Last Color Change (Ctrl-Z)" command, and when Quitting from Kalendis there is a new command "but Reset All Colors" that restores the default color settings.
The user can now switch off Delta T to force all astronomy calculations to work in terms of atomic time (ephemeris days). Kalendis warns of the consequences of doing so at the time that it is done, and once at each subsequent program launch until the user switches Delta T back on.
The Monthly view now remembers the user's choice of calendar for next launch (previously it always reverted to Symmetry454).
The former "Ignore Elevation" checkbox is now simply labelled "Elevation" and has the meaning of "Use Elevation", defaulting to checkmarked.
Earth orbitial eccentricity is now calculated using the algorithm of Pierre Bretagnon (1984), as given by Jean Meeus in chapter 33 of More Mathematical Astronomy Morsels, "Variations of Orbit of Earth", pages 201-205, published in 2002 by Willmann-Bell, Richmond VA. Although this ought to improve lunar calculations, which formerly employed a polynomial, this enhancement unfortunately has no effect on the solar longitude because eccentricity is not explicitly separated in the solar algorithms that Kalendis uses. Also, Kalendis continues to use a polynomial for perihelion and aphelion longitude instead of using the more accurate perihelion calculated by the Bretagnon algorithm.
The lunar distance is now shown when the user clicks on the "Moon Phase" button, and in the quarter phase tool tip text of time and astronomy export reports.
Direction bearings are now quoted as angles relative to the eight cardinal directions (N, NE, E, SE, S, SW, W, NW).
New built-in locales: Washington DC (Zero Milestone), New York City (Times Square, Manhattan), and changed the Tehran coordinates to point to the Azadi Tower (try it using Google as the map server). The coordinates for Mecca have always pointed to the Kaaba, but now that is actually indicated in the locales menu.
If Tehran is selected as the reference meridian for the Future Bahá'í Calendar the reference longitude is now exactly 52.5°E, the same as the Persian Calendar = Official Meridian of Iran. Nevertheless the Persian Norouz and the Future Bahá'í Naw-Rúz may differ by a day because Bahá'í dates start at sunset whereas Persian dates start at midnight with the equinox moment computed relative to local apparent noon.
Added "Tool tip" pop-up explanations for many of the column headings on web style export reports.
New "Jump To..." commands, with addition of jumping to fixed day number #0 or #1.
Reviewed and revised information text for all supported calendars.
The Links menu now has new links to my Hebrew and Bahá'í calendar web pages.
Added more choices for setting the fixed day numbering epoch (Truncated Julian Day, COBOL epoch, Persian epoch).

Numerous other enhancements that are too minor to detail.

Version 9.260(982), Revised August 12, 2006 (Symmetry454) = August 11, 2006 (Gregorian)

The Month view of Julian or Roman calendar was malfunctioning if the AUC (ab urbe condita) year option was checkmarked (years since the founding of Rome) and the user attempted to use the Month view to change the displayed date, now fixed.

Improved Hebrew calendar reporting of Torah portions and special sabbaths.

Hebrew export of yahrzeit, birthday or anniversary dates "from today" used to start from one year later than intended, now fixed, and menu choices are now "From Original Year" and "From Present Year".

Improved appearance of ISO dates in the Gregorian window and on the "month" view.

Improved the appearance and function of the World / 13-Month calendar window, reduced its width to fit better on screen.

Several other enhancements that are too minor to detail.

Version 9.245(967), Revised July 25, 2006 (Symmetry454) = July 27, 2006 (Gregorian)

User can now set the fixed day numbering epoch to any date in the past or future. From "Options" menu choose "Set Fixed Day #1 to..." and make your choice. My personal favorite is the first day of the 3rd millennium, January 1, 2001, but if you prefer your own birthday, be my guest!

This version corrects a long-standing Windows 95/98/ME problem that I just learned about:
Export and Links menu items were unable to launch the user's web browser, now fixed.

The "Adjust for Daylight Saving Time" checkbox no longer disappears, and is now color-coded. Black if checkbox is unchecked (always standard time). Blue if checkbox is marked and standard time is in effect. Red if checkbox is marked and daylight saving time is in effect. This checkbox is disabled for Greenwich Observatory and Paris Observatory, and for any user-defined locales for which the user has selected "Disable Daylight Saving Time for this Locale".

Monthly window now offers the ISO Calendar, in groups of 4 weeks, plus other minor improvements.

Hebrew Calendar weekly Torah portion is now shown in Events window, on Sabbath when it has a regular weekly reading, and on Monday and Thursday when not yom tov, chol ha-moed, rosh chodesh, or chag.

Enhancements to various Export reports, especially the Twilight and Astronomy reports and the Hebrew Calendar Zmanim exports (which now show the weekly Torah portions).

The leap month variant of the Bahá'í Calendar now has available a Persian name for the leap month: Mah Kabie-Seh.

Version 9.223(945), Revised June 24, 2006 (Symmetry454) = June 28, 2006 (Gregorian)

Major Enhancements

Implemented new Monthly view window that can display an interactive monthly view of any supported calendar. By default it uses a novel layout that has the weekdays going down instead of across, so that there is room to display the full weekday names, but the user can click on the "Across" button to change the layout so that abbreviated weekdays go across instead of down (hover over the weekdays to see their full names), and this setting is remembered in the preferences.

Added more Map Server choices.

Enhancements to various Export reports, especially the Twilight and Astronomy reports and the Hebrew Calendar Zmanim exports.

Added support for all Bahá'í Calendar Variants as documented on my new web page dedicated to Bahá'í Calendar Arithmetic.

Added Start On pop-down menu to the Symmetry454 window, now allowing user to chose any weekday to start the calendar year (if "Experiment" mode is enabled). The Fixed Easter date shifts appropriately when the user changes the Start On weekday, to keep the Fixed Easter date on the Sunday that is the median date for Easter according to the Astronomical method of the World Council of Churches.

Symmetry454 leap year lists for fixed arithmetic cycles now include a grouping analysis of the leap year intervals.

User can choose option to have Symmetry454 leap week appended to December (normal default) or stand-alone after December.

Leap week variants of The World Calendar and The Thirteen Month Calendar use the same Start On and leap cycle settings as the Symmetry454 Calendar.

When Kalendis launches a web browser, it should now be the user's default browser for HTML files (previously it always tried to launch Microsoft Internet Explorer).

Numerous other enhancements that are too minor to detail.

Note that the options to display the original and leap day at end of year variants of The World Calendar and The Thirteen Month Calendar are currently disabled, because I have not yet figured out a satisfactory way to handle the "null" days on the new Monthly calendar view.

[ Click here to go back to the Kalendis web page ]

Reduced Gregorian and Roman date field font sizes from 12 to 11 points so that the longest dates will display properly.
Reports --> Hebrew --> Tekufot:
- +60 days later for Tekufat Tishrei now shows on a new line.
- Minor HTML correction: Time column heading was missing its end tag.
- Reports --> Hebrew --> Tekufot:
  - Added submenu for choice of zone, mean solar, or local apparent time. Only zone time includes DST adjustment, if enabled. To generate a report in Jerusalem mean solar time, select Jerusalem as the locale, navigate to the desired year, then choose "by Local Mean Solar Time" from the Tekufot report submenu. For universal time (prime meridian) choose instead Greenwich as the locale.
  - The report now shows Birchat HaChamah for Tekufat Nisan when applicable.
  - For Tekufot of Amorah Shmuel now also shows the Gregorian and Julian dates, and for Tekufat Tishrei also shows the Gregorian and Julian dates 60 days later.
  - Corrected Rambam epoch slightly, now assuming that it refers to exactly 18:00h Jerusalem mean solar time.
  - Tables in report now have ToolTip text for Time column, and no text wrapping of cells. HTML syntax corrections.
  - Rearranged column sequence.
  - Report now uses matching season colour for Tekufat Adda and Tekufat Shmuel.
  - Fixed CSV and TAB formats.
  - If printing to a color printer, note that some web browsers don't print the colors properly, especially those of the table borders, so check your Print Preview first. If the colors are not rendered properly in Print Preview then try a different web browser.
- Gregorian and Symmetry calendars: added USA Black Friday as the Friday after USA Thanksgiving.
- Yerm era report:
  - Revised URL for NASA Delta T polynomials.
  - If output file exists and user wants to use it as is, display it in web browser.
  - If Offset is not zero then put "_plus" in front of it instead of "+" in file name, for UNIX compatibility (web sites).
- Gregorian and Julian calendar info text reworded, and added Easter computus info (not shown for Revised Julian because practise varies).
- Symmetry calendar: Added comment documenting mean month for Symmetry Easter computus based on 4366 lunar months in 353 years.