April 2023 (Gregorian)

Twilight and Astronomy Information

Greenwich Observatory, UK: 51.4778°N, 0°E, elevation 46.9m, time zone UT (Standard Time)

DateStart of TwilightSun
Rise
Rise
Az °
Mid
Day
°
Sun
Long
EoTDay
Span
Day
Hour
Set
Az °
Sun
Set
°
Moon
Phase
End of TwilightMid-
Night
Night
Span
Night
Hour
Moon
Rise
°
Rise
Phase
Moon
Set
°
Set
Phase
AstroSeaCivilCivilSeaAstro
1 Sat03:3804:2205:0205:3582.912:0411.5-3.912:591:05277.518:34130.119:0719:4820:3200:0410:580:5513:07127.604:35123.7
2 Sun03:3504:1905:0005:3282.212:0412.5-3.613:031:05278.118:36141.119:0819:5020:3400:0310:540:5514:20139.104:52134.8
3 Mon03:3204:1704:5805:3081.612:0313.5-3.313:071:06278.718:38152.319:1019:5120:3600:0310:500:5415:33150.805:06145.9
4 Tue03:3004:1404:5505:2881.012:0314.5-3.013:111:06279.318:39163.619:1219:5320:3800:0310:460:5416:45162.705:18157.3
5 Wed03:2704:1204:5305:2680.412:0315.4-2.713:151:06280.018:41175.219:1419:5520:4100:0310:430:5417:59174.805:29168.8
6 Thu03:2404:0904:5105:2379.812:0216.4-2.513:191:07280.618:43187.019:1619:5720:4300:0210:390:5319:15187.205:40180.5
7 Fri03:2104:0704:4805:2179.212:0217.4-2.213:231:07281.218:44199.019:1719:5920:4500:0210:350:5320:33199.905:52192.5
8 Sat03:1804:0404:4605:1978.512:0218.4-1.913:271:07281.818:46211.219:1920:0120:4800:0210:310:5321:56212.806:07204.7
9 Sun03:1504:0104:4405:1777.912:0219.4-1.613:311:08282.418:48223.619:2120:0320:5000:0110:270:5223:20226.006:27217.2
10 Mon03:1203:5904:4105:1577.312:0120.4-1.413:351:08283.018:49236.319:2320:0520:5300:0110:230:52never06:54230.0
11 Tue03:0903:5604:3905:1276.712:0121.3-1.113:391:08283.618:51249.119:2420:0720:5500:0110:190:5200:40239.407:33243.1
12 Wed03:0603:5404:3705:1076.112:0122.3-0.813:421:09284.218:53262.219:2620:0920:5800:0110:150:5101:51252.908:29256.5
13 Thu03:0303:5104:3405:0875.512:0123.3-0.613:461:09284.818:54275.419:2820:1221:0000:0010:110:5102:45266.509:43270.3
14 Fri03:0003:4904:3205:0674.912:0024.3-0.313:501:09285.418:56288.719:3020:1421:0300:0010:080:5103:23280.011:09284.3
15 Sat02:5703:4604:3005:0474.412:0025.3-0.113:541:10286.018:58302.119:3220:1621:0500:0010:040:5003:50293.612:38298.5
16 Sun02:5403:4404:2805:0173.812:0026.2+0.113:581:10286.618:59315.519:3320:1821:0800:0010:000:5004:09307.214:07312.8
17 Mon02:5103:4104:2504:5973.212:0027.2+0.414:021:10287.219:01328.819:3520:2021:1100:0009:560:5004:24320.715:34326.9
18 Tue02:4803:3804:2304:5772.611:5928.2+0.614:051:10287.719:03342.119:3720:2221:1323:5909:520:4904:38334.216:59341.0
19 Wed02:4503:3604:2104:5572.011:5929.2+0.814:091:11288.319:04355.119:3920:2421:1623:5909:490:4904:51347.418:23354.7
20 Thu02:4103:3304:1804:5371.511:5930.2+1.014:131:11288.919:067.919:4120:2621:1923:5909:450:4905:050.519:478.2
21 Fri02:3803:3104:1604:5170.911:5931.1+1.214:171:11289.419:0820.319:4320:2821:2223:5909:410:4805:2013.221:1021.4
22 Sat02:3503:2804:1404:4970.311:5932.1+1.414:211:12290.019:0932.519:4420:3121:2423:5809:370:4805:4025.722:3134.1
23 Sun02:3203:2604:1204:4769.811:5833.1+1.614:241:12290.619:1144.319:4620:3321:2723:5809:340:4806:0737.923:4546.5
24 Mon02:2903:2304:1004:4569.211:5834.1+1.814:281:12291.119:1355.819:4820:3521:3023:5809:300:4706:4349.8never
25 Tue02:2503:2104:0704:4368.711:5835.0+2.014:321:13291.719:1467.019:5020:3721:3323:5809:260:4707:3161.600:4858.4
26 Wed02:2203:1804:0504:4168.111:5836.0+2.214:351:13292.219:1678.119:5220:3921:3623:5809:230:4708:3073.201:3770.0
27 Thu02:1903:1504:0304:3967.611:5837.0+2.314:391:13292.819:1889.119:5420:4221:3923:5809:190:4709:3884.702:1381.3
28 Fri02:1503:1304:0104:3767.011:5838.0+2.514:431:14293.319:19100.019:5620:4421:4323:5709:150:4610:5096.102:3992.4
29 Sat02:1203:1003:5904:3566.511:5738.9+2.614:461:14293.819:21111.019:5720:4621:4623:5709:120:4612:02107.602:58103.5
30 Sun02:0803:0803:5704:3366.011:5739.9+2.714:501:14294.319:23122.019:5920:4821:4923:5709:080:4613:15119.203:13114.6

° Solar Longitude [Sun Long] and Equation of Time [EoT, in minutes] are as of Mid Day = Local Apparent Noon.
° Sunrise/Sunset Azimuth [Rise/Set Az] measured clockwise from true north with center of Sun at horizon (east = 90°, west = 270°). Moon Phase at Sunset.

Note Twilight Solar Depressions: Civil = 6° (see brightest stars, aviation end or start of night, then artificial lights for outdoor activities),
Nautical [Sea] = 12° (horizon no longer visible at sea), Astronomical [Astro] = 18° (minimal atmospheric scatter of sunlight).

Generated by Kalendis 11.161(1691)-Tu <http://individual.utoronto.ca/kalendis/>