Every ingress of the Sun and planets, chronologically, with the exact UTC instant. Retrograde re-entries are marked.
In 2021 the Sun and planets change signs 48 times. Outer-planet ingresses: Jupiter enters Pisces on May 13, 2021, 22:36 UTC; Jupiter enters Aquarius on Jul 28, 2021, 12:42 UTC (retrograde re-entry); Jupiter enters Pisces on Dec 29, 2021, 04:09 UTC.
| Instant (UTC) | Planet | From | Into |
|---|---|---|---|
| Jan 6, 2021, 22:27 UTC | ♂ Mars | Aries | Taurus |
| Jan 8, 2021, 12:00 UTC | ☿ Mercury | Capricorn | Aquarius |
| Jan 8, 2021, 15:41 UTC | ♀ Venus | Sagittarius | Capricorn |
| Jan 19, 2021, 20:40 UTC | ☉ Sun | Capricorn | Aquarius |
| Feb 1, 2021, 14:06 UTC | ♀ Venus | Capricorn | Aquarius |
| Feb 18, 2021, 10:44 UTC | ☉ Sun | Aquarius | Pisces |
| Feb 25, 2021, 13:11 UTC | ♀ Venus | Aquarius | Pisces |
| Mar 4, 2021, 03:30 UTC | ♂ Mars | Taurus | Gemini |
| Mar 15, 2021, 22:27 UTC | ☿ Mercury | Aquarius | Pisces |
| Mar 20, 2021, 09:38 UTC | ☉ Sun | Pisces | Aries |
| Mar 21, 2021, 14:16 UTC | ♀ Venus | Pisces | Aries |
| Apr 4, 2021, 03:41 UTC | ☿ Mercury | Pisces | Aries |
| Apr 14, 2021, 18:22 UTC | ♀ Venus | Aries | Taurus |
| Apr 19, 2021, 10:29 UTC | ☿ Mercury | Aries | Taurus |
| Apr 19, 2021, 20:34 UTC | ☉ Sun | Aries | Taurus |
| Apr 23, 2021, 11:49 UTC | ♂ Mars | Gemini | Cancer |
| May 4, 2021, 02:49 UTC | ☿ Mercury | Taurus | Gemini |
| May 9, 2021, 02:01 UTC | ♀ Venus | Taurus | Gemini |
| May 13, 2021, 22:36 UTC | ♃ Jupiter | Aquarius | Pisces |
| May 20, 2021, 19:37 UTC | ☉ Sun | Taurus | Gemini |
| Jun 2, 2021, 13:18 UTC | ♀ Venus | Gemini | Cancer |
| Jun 11, 2021, 13:34 UTC | ♂ Mars | Cancer | Leo |
| Jun 21, 2021, 03:32 UTC | ☉ Sun | Gemini | Cancer |
| Jun 27, 2021, 04:27 UTC | ♀ Venus | Cancer | Leo |
| Jul 11, 2021, 20:35 UTC | ☿ Mercury | Gemini | Cancer |
| Jul 22, 2021, 00:37 UTC | ♀ Venus | Leo | Virgo |
| Jul 22, 2021, 14:27 UTC | ☉ Sun | Cancer | Leo |
| Jul 28, 2021, 01:11 UTC | ☿ Mercury | Cancer | Leo |
| Jul 28, 2021, 12:42 UTC | ♃ Jupiter ℞ | Pisces | Aquarius |
| Jul 29, 2021, 20:32 UTC | ♂ Mars | Leo | Virgo |
| Aug 11, 2021, 21:57 UTC | ☿ Mercury | Leo | Virgo |
| Aug 16, 2021, 04:27 UTC | ♀ Venus | Virgo | Libra |
| Aug 22, 2021, 21:35 UTC | ☉ Sun | Leo | Virgo |
| Aug 30, 2021, 05:10 UTC | ☿ Mercury | Virgo | Libra |
| Sep 10, 2021, 20:39 UTC | ♀ Venus | Libra | Scorpio |
| Sep 15, 2021, 00:14 UTC | ♂ Mars | Virgo | Libra |
| Sep 22, 2021, 19:21 UTC | ☉ Sun | Virgo | Libra |
| Oct 7, 2021, 11:21 UTC | ♀ Venus | Scorpio | Sagittarius |
| Oct 23, 2021, 04:51 UTC | ☉ Sun | Libra | Scorpio |
| Oct 30, 2021, 14:21 UTC | ♂ Mars | Libra | Scorpio |
| Nov 5, 2021, 10:44 UTC | ♀ Venus | Sagittarius | Capricorn |
| Nov 5, 2021, 22:35 UTC | ☿ Mercury | Libra | Scorpio |
| Nov 22, 2021, 02:34 UTC | ☉ Sun | Scorpio | Sagittarius |
| Nov 24, 2021, 15:36 UTC | ☿ Mercury | Scorpio | Sagittarius |
| Dec 13, 2021, 09:53 UTC | ♂ Mars | Scorpio | Sagittarius |
| Dec 13, 2021, 17:52 UTC | ☿ Mercury | Sagittarius | Capricorn |
| Dec 21, 2021, 15:59 UTC | ☉ Sun | Sagittarius | Capricorn |
| Dec 29, 2021, 04:09 UTC | ♃ Jupiter | Aquarius | Pisces |