301.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Fri, 22 Sep 1972 at 18:39 EDT (18,955 days ago) in Virgo

302.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Wed, 05 Jul 1972 at 12:58 EDT (19,034 days ago) in Pisces

303.

June solstice 21 June will be the longest day of 1972 in the northern hemisphere. Wed, 21 Jun 1972 at 03:12 EDT (19,048 days ago) in Gemini

304.

March equinox Day and night have equal length, marking the beginning of spring in the northern hemisphere and autumn in the southern hemisphere. Mon, 20 Mar 1972 at 07:27 EDT (19,141 days ago) in Pisces

305.

The Earth at perihelion The Earth reaches its closest point to the Sun. Sun, 02 Jan 1972 at 23:13 EDT (19,218 days ago) in Pisces

306.

December solstice 22 December will be the shortest day of 1971 in the northern hemisphere. Wed, 22 Dec 1971 at 07:29 EDT (19,230 days ago) in Sagittarius

307.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Thu, 23 Sep 1971 at 12:49 EDT (19,320 days ago) in Virgo

308.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Sun, 04 Jul 1971 at 00:13 EDT (19,401 days ago) in Pisces

309.

June solstice 22 June will be the longest day of 1971 in the northern hemisphere. Mon, 21 Jun 1971 at 21:24 EDT (19,414 days ago) in Gemini

310.

March equinox Day and night have equal length, marking the beginning of spring in the northern hemisphere and autumn in the southern hemisphere. Sun, 21 Mar 1971 at 01:42 EDT (19,506 days ago) in Pisces

311.

The Earth at perihelion The Earth reaches its closest point to the Sun. Mon, 04 Jan 1971 at 13:31 EDT (19,582 days ago) in Pisces

312.

December solstice 22 December will be the shortest day of 1970 in the northern hemisphere. Tue, 22 Dec 1970 at 01:39 EDT (19,595 days ago) in Sagittarius

313.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Wed, 23 Sep 1970 at 07:02 EDT (19,685 days ago) in Virgo

314.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Sat, 04 Jul 1970 at 10:50 EDT (19,766 days ago) in Pisces

315.

June solstice 21 June will be the longest day of 1970 in the northern hemisphere. Sun, 21 Jun 1970 at 15:45 EDT (19,779 days ago) in Gemini

316.

March equinox Day and night have equal length, marking the beginning of spring in the northern hemisphere and autumn in the southern hemisphere. Fri, 20 Mar 1970 at 19:58 EDT (19,872 days ago) in Pisces

317.

The Earth at perihelion The Earth reaches its closest point to the Sun. Thu, 01 Jan 1970 at 16:08 EDT (19,950 days ago) in Pisces

318.

December solstice 22 December will be the shortest day of 1969 in the northern hemisphere. Sun, 21 Dec 1969 at 19:45 EDT (19,961 days ago) in Sagittarius

319.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Tue, 23 Sep 1969 at 01:08 EDT (20,050 days ago) in Virgo

320.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Sat, 05 Jul 1969 at 15:53 EDT (20,130 days ago) in Pisces