Every ingress of the Sun and planets, chronologically, with the exact UTC instant. Retrograde re-entries are marked.
In 1973 the Sun and planets change signs 50 times. Outer-planet ingresses: Jupiter enters Aquarius on Feb 23, 1973, 09:28 UTC; Saturn enters Cancer on Aug 1, 1973, 22:20 UTC.
| Instant (UTC) | Planet | From | Into |
|---|---|---|---|
| Jan 4, 1973, 14:41 UTC | ☿ Mercury | Sagittarius | Capricorn |
| Jan 11, 1973, 19:15 UTC | ♀ Venus | Sagittarius | Capricorn |
| Jan 20, 1973, 04:48 UTC | ☉ Sun | Capricorn | Aquarius |
| Jan 23, 1973, 15:23 UTC | ☿ Mercury | Capricorn | Aquarius |
| Feb 4, 1973, 18:43 UTC | ♀ Venus | Capricorn | Aquarius |
| Feb 9, 1973, 19:30 UTC | ☿ Mercury | Aquarius | Pisces |
| Feb 12, 1973, 05:51 UTC | ♂ Mars | Sagittarius | Capricorn |
| Feb 18, 1973, 19:01 UTC | ☉ Sun | Aquarius | Pisces |
| Feb 23, 1973, 09:28 UTC | ♃ Jupiter | Capricorn | Aquarius |
| Feb 28, 1973, 18:45 UTC | ♀ Venus | Aquarius | Pisces |
| Mar 20, 1973, 18:12 UTC | ☉ Sun | Pisces | Aries |
| Mar 24, 1973, 20:34 UTC | ♀ Venus | Pisces | Aries |
| Mar 26, 1973, 20:59 UTC | ♂ Mars | Capricorn | Aquarius |
| Apr 16, 1973, 21:17 UTC | ☿ Mercury | Pisces | Aries |
| Apr 18, 1973, 01:05 UTC | ♀ Venus | Aries | Taurus |
| Apr 20, 1973, 05:30 UTC | ☉ Sun | Aries | Taurus |
| May 6, 1973, 02:55 UTC | ☿ Mercury | Aries | Taurus |
| May 8, 1973, 04:09 UTC | ♂ Mars | Aquarius | Pisces |
| May 12, 1973, 08:42 UTC | ♀ Venus | Taurus | Gemini |
| May 20, 1973, 17:24 UTC | ☿ Mercury | Taurus | Gemini |
| May 21, 1973, 04:54 UTC | ☉ Sun | Taurus | Gemini |
| Jun 4, 1973, 04:42 UTC | ☿ Mercury | Gemini | Cancer |
| Jun 5, 1973, 19:20 UTC | ♀ Venus | Gemini | Cancer |
| Jun 20, 1973, 20:53 UTC | ♂ Mars | Pisces | Aries |
| Jun 21, 1973, 13:01 UTC | ☉ Sun | Gemini | Cancer |
| Jun 27, 1973, 06:42 UTC | ☿ Mercury | Cancer | Leo |
| Jun 30, 1973, 08:55 UTC | ♀ Venus | Cancer | Leo |
| Jul 16, 1973, 08:03 UTC | ☿ Mercury ℞ | Leo | Cancer |
| Jul 22, 1973, 23:55 UTC | ☉ Sun | Cancer | Leo |
| Jul 25, 1973, 02:13 UTC | ♀ Venus | Leo | Virgo |
| Aug 1, 1973, 22:20 UTC | ♄ Saturn | Gemini | Cancer |
| Aug 11, 1973, 12:21 UTC | ☿ Mercury | Cancer | Leo |
| Aug 12, 1973, 14:56 UTC | ♂ Mars | Aries | Taurus |
| Aug 19, 1973, 01:10 UTC | ♀ Venus | Virgo | Libra |
| Aug 23, 1973, 06:54 UTC | ☉ Sun | Leo | Virgo |
| Aug 28, 1973, 15:21 UTC | ☿ Mercury | Leo | Virgo |
| Sep 13, 1973, 09:05 UTC | ♀ Venus | Libra | Scorpio |
| Sep 13, 1973, 16:16 UTC | ☿ Mercury | Virgo | Libra |
| Sep 23, 1973, 04:21 UTC | ☉ Sun | Virgo | Libra |
| Oct 2, 1973, 20:12 UTC | ☿ Mercury | Libra | Scorpio |
| Oct 9, 1973, 08:08 UTC | ♀ Venus | Scorpio | Sagittarius |
| Oct 23, 1973, 13:30 UTC | ☉ Sun | Libra | Scorpio |
| Oct 29, 1973, 22:56 UTC | ♂ Mars ℞ | Taurus | Aries |
| Nov 5, 1973, 15:39 UTC | ♀ Venus | Sagittarius | Capricorn |
| Nov 22, 1973, 10:54 UTC | ☉ Sun | Scorpio | Sagittarius |
| Dec 7, 1973, 21:38 UTC | ♀ Venus | Capricorn | Aquarius |
| Dec 8, 1973, 21:29 UTC | ☿ Mercury | Scorpio | Sagittarius |
| Dec 22, 1973, 00:07 UTC | ☉ Sun | Sagittarius | Capricorn |
| Dec 24, 1973, 08:09 UTC | ♂ Mars | Aries | Taurus |
| Dec 28, 1973, 15:14 UTC | ☿ Mercury | Sagittarius | Capricorn |