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

Where does the sun rise and set in Tokyo in January?

Where it risesSoutheast116°
Where it setsSouthwest244°

Mid-January in Tokyo: the sun rises in the southeast — a bearing of 116°, measured from true north — and sets in the southwest, at 244°. That is 26° south of due east at sunrise, and the same 26° south of due west at sunset. From the 1st to the last day of the month both points shift 7° north.

Approximate bearings: they can be a couple of degrees out. They are measured from true north, not the north a phone compass points to.

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
2506:2006:4717:0017:2710 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

Common questions about the sun in Tokyo in January

Where does the sun set in Tokyo in January?
Mid-January in Tokyo: the sun sets in the southwest, a bearing of 244° measured from true north, which is 26° south of due west. It rises in the southeast, at 116°. Over the month both points shift 7° north.
How much daylight does Tokyo gain in January?
Over January the day gets 35 minutes longer in Tokyo: on January 1 the sun rises at 06:51 and sets at 16:39, and on day 31 it rises at 06:44 and sets at 17:06.
How many hours of daylight does Tokyo get in January?
In mid-January the day lasts 9 h 59 min in Tokyo, from sunrise at 06:51 to sunset at 16:50. The table has the day length for each of the 31 days of the month.
What time does it start to get light in Tokyo in January?
In mid-January the sky starts to get light at 06:23 in Tokyo, when the sun is 6° below the horizon, and the sun itself does not rise until 06:51. The “Dawn” column of the table gives that time for every day of the month.
What time does it get dark in Tokyo in January?
It's not the same time as sunset. In mid-January in Tokyo the sun sets at 16:50, but there is still light: civil twilight does not end until 17:18, when the sun reaches 6° below the horizon and usable outdoor light runs out. The “Dusk” column of the table gives that time day by day.
What time of day can you make vitamin D in Tokyo in January?
At no time of day. Not even at midday on January 15 does the UV index reach 3 in Tokyo, and below that minimum the skin makes no vitamin D, however long you stay out. In January it is the season to mind your diet or consider supplementation.