A penumbral lunar eclipse took place on Thursday, January 18, 1973, the first of four lunar eclipses in 1973, the second being with a penumbral lunar eclipse on Friday, June 15, the third being with a penumbral lunar eclipse on Sunday, July 15, and the last being with a partial lunar eclipse on Monday, December 10.
Visibility
Relation to other lunar eclipses
Eclipses in 1973
An annular solar eclipse on Thursday, 4 January 1973. A penumbral lunar eclipse on Thursday, 18 January 1973. A penumbral lunar eclipse on Friday, 15 June 1973. A total solar eclipse on Saturday, 30 June 1973. A penumbral lunar eclipse on Sunday, 15 July 1973. A partial lunar eclipse on Monday, 10 December 1973. An annular solar eclipse on Monday, 24 December 1973.
Lunar year series
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two partial solar eclipses of Solar Saros 150.