on 23 March. A penumbral lunar eclipse on 18 August. An annular solar eclipse on 1 September. A penumbral lunar eclipse on 16 September. Two other penumbral lunar eclipses occurred in 2016, they were on 23 March and 16 September. Lunar year series Saros series According to some sources, this was the last lunar eclipse of Saros cycle 109, and was eclipse 72 in that series. There are many ways to determine the boundaries of Earth's shadow. One model was revised and this eclipse was classified a non-event by that model. Some eclipse sites decided to follow those calculations which meant Saros 109 now includes 71 events, with the last occurring on 8 August 1998. See also List of lunar eclipses List of 21st-century lunar eclipses October 2042 lunar eclipse July 2027 lunar eclipse Notes References Bibliography 2016-08 2016 in science August 2016 events