Every ingress of the Sun and planets, chronologically, with the exact UTC instant. Retrograde re-entries are marked.
In 1940 the Sun and planets change signs 51 times. Outer-planet ingresses: Saturn enters Taurus on Mar 20, 1940, 09:39 UTC; Jupiter enters Taurus on May 16, 1940, 07:54 UTC.
| Instant (UTC) | Planet | From | Into |
|---|---|---|---|
| Jan 4, 1940, 00:05 UTC | ♂ Mars | Pisces | Aries |
| Jan 6, 1940, 07:56 UTC | ☿ Mercury | Sagittarius | Capricorn |
| Jan 18, 1940, 14:00 UTC | ♀ Venus | Aquarius | Pisces |
| Jan 21, 1940, 04:44 UTC | ☉ Sun | Capricorn | Aquarius |
| Jan 25, 1940, 10:14 UTC | ☿ Mercury | Capricorn | Aquarius |
| Feb 11, 1940, 14:01 UTC | ☿ Mercury | Aquarius | Pisces |
| Feb 12, 1940, 05:51 UTC | ♀ Venus | Pisces | Aries |
| Feb 17, 1940, 01:54 UTC | ♂ Mars | Aries | Taurus |
| Feb 19, 1940, 19:04 UTC | ☉ Sun | Aquarius | Pisces |
| Mar 4, 1940, 10:09 UTC | ☿ Mercury | Pisces | Aries |
| Mar 8, 1940, 01:26 UTC | ☿ Mercury ℞ | Aries | Pisces |
| Mar 8, 1940, 16:25 UTC | ♀ Venus | Aries | Taurus |
| Mar 20, 1940, 09:39 UTC | ♄ Saturn | Aries | Taurus |
| Mar 20, 1940, 18:24 UTC | ☉ Sun | Pisces | Aries |
| Apr 1, 1940, 18:41 UTC | ♂ Mars | Taurus | Gemini |
| Apr 4, 1940, 18:10 UTC | ♀ Venus | Taurus | Gemini |
| Apr 17, 1940, 04:56 UTC | ☿ Mercury | Pisces | Aries |
| Apr 20, 1940, 05:51 UTC | ☉ Sun | Aries | Taurus |
| May 6, 1940, 18:47 UTC | ♀ Venus | Gemini | Cancer |
| May 6, 1940, 21:14 UTC | ☿ Mercury | Aries | Taurus |
| May 16, 1940, 07:54 UTC | ♃ Jupiter | Aries | Taurus |
| May 17, 1940, 14:46 UTC | ♂ Mars | Gemini | Cancer |
| May 21, 1940, 05:23 UTC | ☉ Sun | Taurus | Gemini |
| May 21, 1940, 13:58 UTC | ☿ Mercury | Taurus | Gemini |
| Jun 4, 1940, 22:28 UTC | ☿ Mercury | Gemini | Cancer |
| Jun 21, 1940, 13:37 UTC | ☉ Sun | Gemini | Cancer |
| Jun 26, 1940, 14:32 UTC | ☿ Mercury | Cancer | Leo |
| Jul 3, 1940, 10:32 UTC | ♂ Mars | Cancer | Leo |
| Jul 5, 1940, 16:17 UTC | ♀ Venus ℞ | Cancer | Gemini |
| Jul 21, 1940, 01:39 UTC | ☿ Mercury ℞ | Leo | Cancer |
| Jul 23, 1940, 00:34 UTC | ☉ Sun | Cancer | Leo |
| Aug 1, 1940, 02:20 UTC | ♀ Venus | Gemini | Cancer |
| Aug 11, 1940, 17:06 UTC | ☿ Mercury | Cancer | Leo |
| Aug 19, 1940, 15:58 UTC | ♂ Mars | Leo | Virgo |
| Aug 23, 1940, 07:28 UTC | ☉ Sun | Leo | Virgo |
| Aug 29, 1940, 11:11 UTC | ☿ Mercury | Leo | Virgo |
| Sep 8, 1940, 16:59 UTC | ♀ Venus | Cancer | Leo |
| Sep 14, 1940, 11:34 UTC | ☿ Mercury | Virgo | Libra |
| Sep 23, 1940, 04:46 UTC | ☉ Sun | Virgo | Libra |
| Oct 3, 1940, 12:14 UTC | ☿ Mercury | Libra | Scorpio |
| Oct 5, 1940, 14:21 UTC | ♂ Mars | Virgo | Libra |
| Oct 6, 1940, 21:09 UTC | ♀ Venus | Leo | Virgo |
| Oct 23, 1940, 13:39 UTC | ☉ Sun | Libra | Scorpio |
| Nov 1, 1940, 17:24 UTC | ♀ Venus | Virgo | Libra |
| Nov 20, 1940, 17:16 UTC | ♂ Mars | Libra | Scorpio |
| Nov 22, 1940, 10:49 UTC | ☉ Sun | Scorpio | Sagittarius |
| Nov 26, 1940, 12:32 UTC | ♀ Venus | Libra | Scorpio |
| Dec 9, 1940, 12:45 UTC | ☿ Mercury | Scorpio | Sagittarius |
| Dec 20, 1940, 19:37 UTC | ♀ Venus | Scorpio | Sagittarius |
| Dec 21, 1940, 23:55 UTC | ☉ Sun | Sagittarius | Capricorn |
| Dec 29, 1940, 09:35 UTC | ☿ Mercury | Sagittarius | Capricorn |