Moon Calendar — August 2021
The Moon's zodiac sign for every day of August 2021, with sign-change times and all four phases — computed from real planetary positions. Times are UTC.
The Moon in August 2021
In August 2021 the Moon changes zodiac sign 13 times and passes through all 12 signs. It starts the month in Taurus on August 1 and ends it in Gemini on August 31. Counting the sign it occupies at noon UTC each day, it spends the most days in Gemini (5 days), Taurus (4 days) and Leo (3 days).
The main lunar phases this month are: New Moon on August 8 in Leo, First Quarter on August 15 in Scorpio, Full Moon on August 22 in Aquarius and Last Quarter on August 30 in Gemini.
For context: the Moon circles the zodiac in about 27.3 days, so it usually stays in one sign for roughly 2 to 2.5 days before moving on. Its phases follow the longer synodic month of about 29.5 days — the time from one new moon to the next — which is why each phase lands on a different date every month. All times here are UTC, so a sign change or phase near midnight may fall on the neighboring date in your time zone.
Moon sign by day
| Date | Moon in | Sign change (UTC) |
|---|---|---|
| Sun, Aug 1 | Taurus | — |
| Mon, Aug 2 | Gemini | Taurus → Gemini ~9:00 |
| Tue, Aug 3 | Gemini | — |
| Wed, Aug 4 | Gemini | Gemini → Cancer ~22:00 |
| Thu, Aug 5 | Cancer | — |
| Fri, Aug 6 | Cancer | — |
| Sat, Aug 7 | Leo | Cancer → Leo ~8:00 |
| Sun, Aug 8 | Leo | — |
| Mon, Aug 9 | Leo | Leo → Virgo ~15:00 |
| Tue, Aug 10 | Virgo | — |
| Wed, Aug 11 | Virgo | Virgo → Libra ~21:00 |
| Thu, Aug 12 | Libra | — |
| Fri, Aug 13 | Libra | — |
| Sat, Aug 14 | Scorpio | Libra → Scorpio ~1:00 |
| Sun, Aug 15 | Scorpio | — |
| Mon, Aug 16 | Sagittarius | Scorpio → Sagittarius ~4:00 |
| Tue, Aug 17 | Sagittarius | — |
| Wed, Aug 18 | Capricorn | Sagittarius → Capricorn ~6:00 |
| Thu, Aug 19 | Capricorn | — |
| Fri, Aug 20 | Aquarius | Capricorn → Aquarius ~9:00 |
| Sat, Aug 21 | Aquarius | — |
| Sun, Aug 22 | Aquarius | Aquarius → Pisces ~13:00 |
| Mon, Aug 23 | Pisces | — |
| Tue, Aug 24 | Pisces | Pisces → Aries ~19:00 |
| Wed, Aug 25 | Aries | — |
| Thu, Aug 26 | Aries | — |
| Fri, Aug 27 | Taurus | Aries → Taurus ~5:00 |
| Sat, Aug 28 | Taurus | — |
| Sun, Aug 29 | Taurus | Taurus → Gemini ~17:00 |
| Mon, Aug 30 | Gemini | — |
| Tue, Aug 31 | Gemini | — |