When looking at Lunar eclipse (which occurs when the Moon moves into the Earth's shadow and can occur only when the Sun, Earth, and Moon are exactly or very closely aligned) series sets from 19371940, there was a total ascending node on May 14, 1938, and May 3, 1939 and there were penumbral ascending nodes May 25, 1937 and April 22, 1940.
A lunar eclipse occurs when the Moon moves into the Earth's shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy) with Earth between the other two, and only on the night of a full moon. 1938 May 14 Total 1939 May 03 Total 1937 May 25 Penumbral 1940 Apr 22 Penumbral 
