China FDC on "Astronomical Phenomena"

First Day Cover
首日封
Sobrescrito de 1.º Dia

China


Astronomical Phenomena

Date of Issue : 21 June 2020

5-1 : Annular Eclipse
5-2 : Total Lunar Eclipse
5-3 : Meteor Shower
5-4 : Great Comet
5-5 : Transit of Mercury