Anchorage
Vitamin D from the sun in Anchorage
4 months of sun
In Anchorage you can synthesize vitamin D from May to August.
From September to April synthesis isn't possible — this is when a supplement can help.
Anchorage: we'll tell you the days you can make vitamin D.
Loading notifications…Today's sun in Anchorage
Today's sunrise, sunset, golden hour and day length.
Year-round profile in Anchorage
Daily hours with enough sun to synthesize vitamin D across the year.
Seasonal windows
- March: synthesis isn't possible.
- June: between 10:00 and 17:00, about 11 min for 1000 IU.
- September: synthesis isn't possible.
- December: synthesis isn't possible.
Estimated for Fitzpatrick type III skin, arms and face exposed, clear sky.
When to supplement in Anchorage
During the months without solar synthesis, vitamin D comes only from food or a supplement. It is usually taken as D3, often with magnesium — which the body needs to activate it — and vitamin K (as K2), which contributes to the maintenance of normal bones.
More about supplementsSunrise and sunset by month in Anchorage
How sunrise, sunset and day length change over the year.
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| 09:59 | 16:19 | 6 h 20 min | |
| 08:48 | 17:40 | 8 h 52 min | |
| 08:23 | 19:56 | 11 h 33 min | |
| 06:42 | 21:17 | 14 h 35 min | |
| 05:13 | 22:38 | 17 h 25 min | |
| 04:21 | 23:39 | 19 h 18 min | |
| 04:51 | 23:19 | 18 h 29 min | |
| 06:10 | 21:58 | 15 h 48 min | |
| 07:31 | 20:17 | 12 h 46 min | |
| 08:49 | 18:40 | 9 h 51 min | |
| 09:12 | 16:17 | 7 h 05 min | |
| 10:11 | 15:40 | 5 h 30 min |
Approximate values for mid-month (the 15th).
Frequently asked questions about vitamin D in Anchorage
- Can I get vitamin D from the sun in winter in Anchorage?
- In Anchorage you can synthesize vitamin D from May to August.
- How many minutes of sun do I need in Anchorage?
- In summer, about 11 minutes with arms and face exposed is enough for 1000 IU (Fitzpatrick type III skin, clear sky).
- What time does the sun rise and set in Anchorage?
- It shifts with the seasons: in June the sun rises around 04:21 and sets around 23:39; in December it rises around 10:11 and sets around 15:40.
- What is the longest day of the year in Anchorage?
- Longest day: June, with about 19 h of daylight. Shortest day: December, with about 5 h.