A penumbral lunar eclipse took place on Monday, September 4, 1933. This subtle penumbral eclipse may have been visible to a skilled observer at maximum eclipse. 70% of the Moon's disc was partially shaded by the Earth (none of it was in total shadow), which caused a gentle shadow gradient across its disc at maximum; the eclipse as a whole lasted 3 hours and 41 minutes.

Lunar eclipse series sets from 1930–1933

Descending node				Ascending node
Saros	Date viewing	Type chart		Saros	Date viewing	Type chart
111	1930 Apr 13	Partial		116	1930 Oct 07	Partial
121	1931 Apr 02	Total		126	1931 Sep 26	Total
131	1932 Mar 22	Partial		136	1932 Sep 14	Partial
141	1933 Mar 12	Penumbral		146	1933 Sep 04	Penumbral

• List of lunar eclipses and List of 21st-century lunar eclipses

• Saros series 146
• 1933 Sep 04 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

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