Castle Point Astronomy Club Next Meeting 19/02/2020
- secretary646
- Feb 16, 2020
- 1 min read
Updated: Feb 24, 2020
QCC: Quadrennial Calendrical Complications - why we need an extra day every four years, except when we don't. (Gord Falconer)
#cpastro https:www.cpastro.club/programme
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