321.

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 (19,626 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 (19,707 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 (19,720 days ago) in Gemini

324.

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 (19,812 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 (19,888 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 (19,901 days ago) in Sagittarius

327.

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 (19,991 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 (20,072 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 (20,085 days ago) in Gemini

330.

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 (20,178 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 (20,256 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 (20,267 days ago) in Sagittarius

333.

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 (20,356 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 (20,436 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 (20,450 days ago) in Gemini

336.

March equinox Day and night have equal length, marking the beginning of spring in the northern hemisphere and autumn in the southern hemisphere. Thu, 20 Mar 1969 at 14:08 EDT (20,543 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 (20,620 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 (20,632 days ago) in Sagittarius

339.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Sun, 22 Sep 1968 at 19:24 EDT (20,722 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 (20,804 days ago) in Pisces