The 13.7-day-old Moon (a day before Full) with the south polar region tipped toward us in a favourable libration for viewing the southern regions and features. This was April 6, 2020. The large crater, Bailly, is on the southern limb, better seen here than at most similar phases, due to the favourable southern libration.

13 day 14 day bailly gibbous moon south pole tycho full disk highlands libration maria rays southern sky astronomy astro photography skies science nature astro