Moon Phases January 1990 Lunar calendar | North Hemisphere
See for the southern hemisphere
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
| s | m | t | w | t | f | s |
1 | 2 | 3 | 4 | 5 | 6 | |
7 | 8 | 9 | 10 | 11 Full | 12 | 13 |
14 | 15 | 16 | 17 | 18 | 19 | 20 |
21 | 22 | 23 | 24 | 25 | 26 New | 27 |
28 | 29 | 30 | 31 |
Day 11: Full Moon
Day 26: New Moon
Other dates
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The lunar phases are produced by the interaction between the movements of the sun, the moon and the earth. In one year the moon makes thirteen trips around the earth, that is, thirteen lunations. Each lunar cycle lasts about 28 days.
| Days since New Moon | Illuminated percentage | Name |
|---|---|---|
| 0 | 0% | New Moon |
| 4 | 25% | Waxing Crescent |
| 7 | 50% | First Quarter |
| 10 | 75% | Waxing Gibbous |
| 14 | 100% | Full Moon |
| 18 | 75% | Waning Gibbous |
| 22 | 50% | Last Quarter |
| 26 | 25% | Wanning Crescent |
