321.

September equinox Day and night have equal length: the beginning of astronomical autumn in the northern hemisphere. Thu, 23 Sep 1971 at 12:49 EDT (19,929 days ago) in Virgo

322.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Sun, 04 Jul 1971 at 00:13 EDT (20,010 days ago) in Pisces

323.

June solstice 22 June will be the longest day of 1971 in the northern hemisphere. Mon, 21 Jun 1971 at 21:24 EDT (20,023 days ago) in Gemini

324.

March equinox Day and night have equal length: the beginning of astronomical spring in the northern hemisphere. Sun, 21 Mar 1971 at 01:42 EDT (20,115 days ago) in Pisces

325.

The Earth at perihelion The Earth reaches its closest point to the Sun. Mon, 04 Jan 1971 at 13:31 EDT (20,191 days ago) in Pisces

326.

December solstice 22 December will be the shortest day of 1970 in the northern hemisphere. Tue, 22 Dec 1970 at 01:39 EDT (20,204 days ago) in Sagittarius

327.

September equinox Day and night have equal length: the beginning of astronomical autumn in the northern hemisphere. Wed, 23 Sep 1970 at 07:02 EDT (20,294 days ago) in Virgo

328.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Sat, 04 Jul 1970 at 10:50 EDT (20,375 days ago) in Pisces

329.

June solstice 21 June will be the longest day of 1970 in the northern hemisphere. Sun, 21 Jun 1970 at 15:45 EDT (20,388 days ago) in Gemini

330.

March equinox Day and night have equal length: the beginning of astronomical spring in the northern hemisphere. Fri, 20 Mar 1970 at 19:58 EDT (20,481 days ago) in Pisces

331.

The Earth at perihelion The Earth reaches its closest point to the Sun. Thu, 01 Jan 1970 at 16:08 EDT (20,559 days ago) in Pisces

332.

December solstice 22 December will be the shortest day of 1969 in the northern hemisphere. Sun, 21 Dec 1969 at 19:45 EDT (20,570 days ago) in Sagittarius

333.

September equinox Day and night have equal length: the beginning of astronomical autumn in the northern hemisphere. Tue, 23 Sep 1969 at 01:08 EDT (20,659 days ago) in Virgo

334.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Sat, 05 Jul 1969 at 15:53 EDT (20,739 days ago) in Pisces

335.

June solstice 21 June will be the longest day of 1969 in the northern hemisphere. Sat, 21 Jun 1969 at 09:55 EDT (20,753 days ago) in Gemini

336.

March equinox Day and night have equal length: the beginning of astronomical spring in the northern hemisphere. Thu, 20 Mar 1969 at 14:08 EDT (20,846 days ago) in Pisces

337.

The Earth at perihelion The Earth reaches its closest point to the Sun. Thu, 02 Jan 1969 at 20:06 EDT (20,923 days ago) in Pisces

338.

December solstice 21 December will be the shortest day of 1968 in the northern hemisphere. Sat, 21 Dec 1968 at 13:59 EDT (20,935 days ago) in Sagittarius

339.

September equinox Day and night have equal length: the beginning of astronomical autumn in the northern hemisphere. Sun, 22 Sep 1968 at 19:24 EDT (21,025 days ago) in Virgo

340.

The Earth at aphelion The Earth reaches its furthest point from the Sun. Tue, 02 Jul 1968 at 15:55 EDT (21,107 days ago) in Pisces