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| Date | Time | Event | Constellation |
| 01 Jan 2027 | 17:21 GMT | Mercury at superior solar conjunction | Sagittarius |
| 03 Feb 2027 | 05:11 GMT | Mercury at greatest elongation east | Aquarius |
| 04 Feb 2027 | 00:42 GMT | Mercury at dichotomy | Aquarius |
| 05 Feb 2027 | – | Mercury at highest altitude in evening sky | Aquarius |
| 06 Feb 2027 | 07:41 GMT | Mercury at perihelion | Aquarius |
| 08 Feb 2027 | 03:37 GMT | Conjunction of the Moon and Mercury | Aquarius |
| 08 Feb 2027 | 03:55 GMT | Close approach of the Moon and Mercury | Aquarius |
| 08 Feb 2027 | 03:55 GMT | Lunar occultation of Mercury | Aquarius |
| 18 Feb 2027 | 16:35 GMT | Mercury at inferior solar conjunction | Aquarius |
| 05 Mar 2027 | – | Mercury at highest altitude in morning sky | Aquarius |
| 06 Mar 2027 | 05:30 GMT | Conjunction of the Moon and Mercury | Capricornus |
| 06 Mar 2027 | 06:32 GMT | Close approach of the Moon and Mercury | Capricornus |
| 14 Mar 2027 | 14:19 GMT | Mercury at dichotomy | Capricornus |
| 17 Mar 2027 | 04:20 GMT | Mercury at greatest elongation west | Aquarius |
| 22 Mar 2027 | 07:33 GMT | Mercury at aphelion | Aquarius |
| 05 Apr 2027 | 11:30 GMT | Conjunction of the Moon and Mercury | Aquarius |
| 11 Apr 2027 | 13:02 GMT | Conjunction of Mercury and Neptune | Pisces |
| 28 Apr 2027 | 22:28 GMT | Mercury at superior solar conjunction | Aries |
| 05 May 2027 | 08:27 GMT | Mercury at perihelion | Aries |
| 11 May 2027 | 18:21 GMT | Conjunction of Mercury and Uranus | Taurus |
| 22 May 2027 | 21:35 GMT | Mercury at dichotomy | Taurus |
| 24 May 2027 | – | Mercury at highest altitude in evening sky | Taurus |
| 28 May 2027 | 14:13 GMT | Mercury at greatest elongation east | Taurus |
| 06 Jun 2027 | 07:30 GMT | Conjunction of the Moon and Mercury | Gemini |
| 18 Jun 2027 | 07:58 GMT | Mercury at aphelion | Orion |
| 23 Jun 2027 | 08:54 GMT | Mercury at inferior solar conjunction | Orion |
| 03 Jul 2027 | 05:21 GMT | Conjunction of the Moon and Mercury | Taurus |
| 16 Jul 2027 | 04:31 GMT | Mercury at greatest elongation west | Orion |
| 20 Jul 2027 | 02:34 GMT | Mercury at dichotomy | Gemini |
| 21 Jul 2027 | – | Mercury at highest altitude in morning sky | Orion |
| 01 Aug 2027 | 07:39 GMT | Mercury at perihelion | Gemini |
| 11 Aug 2027 | 12:09 GMT | Mercury at superior solar conjunction | Leo |
| 24 Aug 2027 | 10:13 GMT | Conjunction of Mercury and Ceres | Leo |
| 02 Sep 2027 | 05:46 GMT | Conjunction of the Moon and Mercury | Virgo |
| 06 Sep 2027 | – | Mercury at highest altitude in evening sky | Virgo |
| 14 Sep 2027 | 07:04 GMT | Mercury at aphelion | Virgo |
| 24 Sep 2027 | 16:59 GMT | Mercury at greatest elongation east | Virgo |
| 29 Sep 2027 | 15:06 GMT | Mercury at dichotomy | Virgo |
| 02 Oct 2027 | 00:21 GMT | Close approach of the Moon and Mercury | Virgo |
| 02 Oct 2027 | 01:28 GMT | Conjunction of the Moon and Mercury | Virgo |
| 10 Oct 2027 | 14:04 GMT | Conjunction of Venus and Mercury | Virgo |
| 19 Oct 2027 | 16:26 GMT | Mercury at inferior solar conjunction | Virgo |
| 28 Oct 2027 | 06:24 GMT | Mercury at perihelion | Virgo |
| 28 Oct 2027 | 14:24 GMT | Conjunction of the Moon and Mercury | Virgo |
| 02 Nov 2027 | 14:57 GMT | Mercury at dichotomy | Virgo |
| 04 Nov 2027 | – | Mercury at highest altitude in morning sky | Virgo |
| 04 Nov 2027 | 07:58 GMT | Mercury at greatest elongation west | Virgo |
| 11 Dec 2027 | 05:06 GMT | Mercury at aphelion | Ophiuchus |
| 11 Dec 2027 | 22:31 GMT | Mercury at superior solar conjunction | Ophiuchus |
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