Every ingress of the Sun and planets, chronologically, with the exact UTC instant. Retrograde re-entries are marked.
In 2100 the Sun and planets change signs 46 times. Outer-planet ingresses: Jupiter enters Scorpio on Oct 10, 2100, 06:25 UTC; Saturn enters Scorpio on Oct 26, 2100, 17:05 UTC.
| Instant (UTC) | Planet | From | Into |
|---|---|---|---|
| Jan 2, 2100, 03:48 UTC | ♂ Mars | Aries | Taurus |
| Jan 8, 2100, 08:29 UTC | ☿ Mercury | Capricorn | Aquarius |
| Jan 9, 2100, 07:01 UTC | ♀ Venus | Aquarius | Pisces |
| Jan 20, 2100, 00:47 UTC | ☉ Sun | Capricorn | Aquarius |
| Feb 4, 2100, 01:02 UTC | ♀ Venus | Pisces | Aries |
| Feb 18, 2100, 14:39 UTC | ☉ Sun | Aquarius | Pisces |
| Mar 1, 2100, 19:47 UTC | ♂ Mars | Taurus | Gemini |
| Mar 4, 2100, 02:36 UTC | ♀ Venus | Aries | Taurus |
| Mar 15, 2100, 20:32 UTC | ☿ Mercury | Aquarius | Pisces |
| Mar 20, 2100, 13:05 UTC | ☉ Sun | Pisces | Aries |
| Apr 4, 2100, 00:12 UTC | ☿ Mercury | Pisces | Aries |
| Apr 18, 2100, 09:39 UTC | ♀ Venus | Taurus | Gemini |
| Apr 19, 2100, 07:14 UTC | ☿ Mercury | Aries | Taurus |
| Apr 19, 2100, 23:27 UTC | ☉ Sun | Aries | Taurus |
| Apr 21, 2100, 15:51 UTC | ♂ Mars | Gemini | Cancer |
| Apr 23, 2100, 21:36 UTC | ♀ Venus ℞ | Gemini | Taurus |
| May 4, 2100, 01:02 UTC | ☿ Mercury | Taurus | Gemini |
| May 20, 2100, 21:59 UTC | ☉ Sun | Taurus | Gemini |
| Jun 9, 2100, 22:21 UTC | ♂ Mars | Cancer | Leo |
| Jun 21, 2100, 05:34 UTC | ☉ Sun | Gemini | Cancer |
| Jul 6, 2100, 13:37 UTC | ♀ Venus | Taurus | Gemini |
| Jul 11, 2100, 20:22 UTC | ☿ Mercury | Gemini | Cancer |
| Jul 22, 2100, 16:25 UTC | ☉ Sun | Cancer | Leo |
| Jul 27, 2100, 21:51 UTC | ☿ Mercury | Cancer | Leo |
| Jul 28, 2100, 08:12 UTC | ♂ Mars | Leo | Virgo |
| Aug 7, 2100, 04:51 UTC | ♀ Venus | Gemini | Cancer |
| Aug 11, 2100, 17:58 UTC | ☿ Mercury | Leo | Virgo |
| Aug 22, 2100, 23:49 UTC | ☉ Sun | Leo | Virgo |
| Aug 30, 2100, 01:44 UTC | ☿ Mercury | Virgo | Libra |
| Sep 3, 2100, 13:37 UTC | ♀ Venus | Cancer | Leo |
| Sep 13, 2100, 14:09 UTC | ♂ Mars | Virgo | Libra |
| Sep 22, 2100, 22:02 UTC | ☉ Sun | Virgo | Libra |
| Sep 29, 2100, 07:10 UTC | ♀ Venus | Leo | Virgo |
| Oct 10, 2100, 06:25 UTC | ♃ Jupiter | Libra | Scorpio |
| Oct 23, 2100, 08:02 UTC | ☉ Sun | Libra | Scorpio |
| Oct 24, 2100, 02:53 UTC | ♀ Venus | Virgo | Libra |
| Oct 26, 2100, 17:05 UTC | ♄ Saturn | Libra | Scorpio |
| Oct 29, 2100, 06:05 UTC | ♂ Mars | Libra | Scorpio |
| Nov 5, 2100, 19:10 UTC | ☿ Mercury | Libra | Scorpio |
| Nov 17, 2100, 09:52 UTC | ♀ Venus | Libra | Scorpio |
| Nov 22, 2100, 06:11 UTC | ☉ Sun | Scorpio | Sagittarius |
| Nov 24, 2100, 10:34 UTC | ☿ Mercury | Scorpio | Sagittarius |
| Dec 11, 2100, 10:14 UTC | ♀ Venus | Scorpio | Sagittarius |
| Dec 12, 2100, 02:54 UTC | ♂ Mars | Scorpio | Sagittarius |
| Dec 13, 2100, 13:10 UTC | ☿ Mercury | Sagittarius | Capricorn |
| Dec 21, 2100, 19:52 UTC | ☉ Sun | Sagittarius | Capricorn |