Moon Pairs and the Synodic Month via NASA https://j.mp/33ZzvSq https://j.mp/3mPeGSp

Moon Pairs and the Synodic Month via NASA https://t.co/XrImynhmTW pic.twitter.com/LTklDtbXgb

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) September 26, 2020

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