Moon Calendar — October 2021
The Moon's zodiac sign for every day of October 2021, with sign-change times and all four phases — computed from real planetary positions. Times are UTC.
The Moon in October 2021
In October 2021 the Moon changes zodiac sign 14 times and passes through all 12 signs. It starts the month in Leo on October 1 and ends it in Virgo on October 31. Counting the sign it occupies at noon UTC each day, it spends the most days in Leo (5 days), Virgo (4 days) and Aries (3 days).
The main lunar phases this month are: New Moon on October 6 in Libra, First Quarter on October 13 in Capricorn, Full Moon on October 20 in Aries and Last Quarter on October 28 in Leo.
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) |
|---|---|---|
| Fri, Oct 1 | Leo | Cancer → Leo ~1:00 |
| Sat, Oct 2 | Leo | — |
| Sun, Oct 3 | Virgo | Leo → Virgo ~9:00 |
| Mon, Oct 4 | Virgo | — |
| Tue, Oct 5 | Virgo | Virgo → Libra ~13:00 |
| Wed, Oct 6 | Libra | — |
| Thu, Oct 7 | Libra | Libra → Scorpio ~15:00 |
| Fri, Oct 8 | Scorpio | — |
| Sat, Oct 9 | Scorpio | Scorpio → Sagittarius ~16:00 |
| Sun, Oct 10 | Sagittarius | — |
| Mon, Oct 11 | Sagittarius | Sagittarius → Capricorn ~18:00 |
| Tue, Oct 12 | Capricorn | — |
| Wed, Oct 13 | Capricorn | Capricorn → Aquarius ~21:00 |
| Thu, Oct 14 | Aquarius | — |
| Fri, Oct 15 | Aquarius | — |
| Sat, Oct 16 | Pisces | Aquarius → Pisces ~3:00 |
| Sun, Oct 17 | Pisces | — |
| Mon, Oct 18 | Aries | Pisces → Aries ~11:00 |
| Tue, Oct 19 | Aries | — |
| Wed, Oct 20 | Aries | Aries → Taurus ~20:00 |
| Thu, Oct 21 | Taurus | — |
| Fri, Oct 22 | Taurus | — |
| Sat, Oct 23 | Gemini | Taurus → Gemini ~8:00 |
| Sun, Oct 24 | Gemini | — |
| Mon, Oct 25 | Gemini | Gemini → Cancer ~22:00 |
| Tue, Oct 26 | Cancer | — |
| Wed, Oct 27 | Cancer | — |
| Thu, Oct 28 | Leo | Cancer → Leo ~10:00 |
| Fri, Oct 29 | Leo | — |
| Sat, Oct 30 | Leo | Leo → Virgo ~19:00 |
| Sun, Oct 31 | Virgo | — |