Vitamin D

The sun, month by month

Sunrise and sunset in Tokyo in January

On January 1 in Tokyo the sun rises at 06:51 and sets at 16:39; on day 31 it rises at 06:44 and sets at 17:06. Over the month the day grows 35 minutes longer.

Sunrise06:51
Sunset16:50
Golden hour16:12–16:50
Day length9 h 59 min

Day by day

All times are local to Tokyo. Dawn and dusk mark civil twilight.

DayDawnSunriseSunsetDuskDay length
106:2306:5116:3917:079 h 47 min
206:2306:5116:3917:089 h 48 min
306:2306:5216:4017:089 h 49 min
406:2306:5216:4117:099 h 49 min
506:2406:5216:4217:109 h 50 min
606:2406:5216:4217:119 h 51 min
706:2406:5216:4317:119 h 51 min
806:2406:5216:4417:129 h 52 min
906:2406:5216:4517:139 h 53 min
1006:2406:5216:4617:149 h 54 min
1106:2406:5216:4717:159 h 55 min
1206:2406:5116:4817:169 h 56 min
1306:2306:5116:4817:169 h 57 min
1406:2306:5116:4917:179 h 58 min
1506:2306:5116:5017:189 h 59 min
1606:2306:5116:5117:1910 h 01 min
1706:2306:5016:5217:2010 h 02 min
1806:2206:5016:5317:2110 h 03 min
1906:2206:5016:5417:2210 h 04 min
2006:2206:4916:5517:2310 h 06 min
2106:2106:4916:5617:2410 h 07 min
2206:2106:4916:5717:2410 h 08 min
2306:2106:4816:5817:2510 h 10 min
2406:2006:4816:5917:2610 h 11 min
2506:2006:4716:6017:2710 h 13 min
2606:1906:4717:0117:2810 h 14 min
2706:1906:4617:0217:2910 h 16 min
2806:1806:4617:0317:3010 h 17 min
2906:1806:4517:0417:3110 h 19 min
3006:1706:4417:0517:3210 h 21 min
3106:1706:4417:0617:3310 h 22 min

Approximate astronomical values: they can shift a minute or two from year to year.

What about vitamin D in January?

In January the sun doesn't climb high enough in Tokyo for vitamin D synthesis: the season to mind your diet or consider supplementation.

See the Tokyo vitamin D guide