Mercury retrograde 1977

4 periods, 83 days inside the year — 22.7% of 1977. Station times below are UTC and computed to the minute.

20 days · retreats 16.22° · crosses the year boundary

28 December → 17 January 1977 in Capricorn

Stations retrograde 28 Dec 1976, 04:24 UTC at 23.64° Capricorn
Stations direct 17 Jan 1977, 08:06 UTC at 7.42° Capricorn
Shadow opens 11 Dec 1976 (17 days before)
Shadow closes 5 Feb 1977 (20 days after)
Full window including shadows 57 days

Read against Capricorn, and see that sign’s horoscope for the period.

24 days · retreats 9.8°

20 April → 13 May 1977 in Taurus

Stations retrograde 20 Apr 1977, 01:59 UTC at 14.83° Taurus
Stations direct 13 May 1977, 21:01 UTC at 5.03° Taurus
Shadow opens 6 Apr 1977 (14 days before)
Shadow closes 30 May 1977 (17 days after)
Full window including shadows 54 days

Read against Taurus, and see that sign’s horoscope for the period.

23 days · retreats 13.83°

22 August → 14 September 1977 in Virgo

Stations retrograde 22 Aug 1977, 14:05 UTC at 21.08° Virgo
Stations direct 14 Sep 1977, 14:59 UTC at 7.25° Virgo
Shadow opens 2 Aug 1977 (20 days before)
Shadow closes 28 Sep 1977 (14 days after)
Full window including shadows 57 days

Read against Virgo, and see that sign’s horoscope for the period.

20 days · retreats 16.31°

12 December → 31 December 1977 in Capricorn

Stations retrograde 12 Dec 1977, 01:54 UTC at 7.76° Capricorn
Stations direct 31 Dec 1977, 22:00 UTC at 21.45° Sagittarius
Shadow opens 24 Nov 1977 (18 days before)
Shadow closes 19 Jan 1978 (19 days after)
Full window including shadows 57 days

Read against Capricorn, and see that sign’s horoscope for the period.

Computed from the actual motion

The nearest Mercury retrogrades either side of 1977

Previous

1976 Ended 17 January 1977 after 20 days, moving back 16.22° through the zodiac.

Next

1978 Begins 1 April 1978 and runs 24 days.

Gap across 1977

1.2 years between the two — long enough for a whole calendar year to fall inside it with nothing to report.

Both dates are computed from the planet’s apparent motion, not taken from a table. A retrograde begins the moment its daily movement against the stars turns negative, and that moment is findable to the hour.