Group 1 - The smallest waning crescent moon of the year will occur on January 15, with the best viewing time being before dawn if the weather is clear [1] - The moon's phases, including the waning crescent, follow a cycle of approximately 29.53 days, transitioning from full moon to waning phases [1][2] - The term "annual smallest waning crescent" refers to the moon being at its farthest point from Earth, resulting in a smaller apparent size compared to other months [2] Group 2 - The public is encouraged to photograph the smallest waning crescent and compare it with the largest waning crescent later in the year for an interesting visual contrast [5] - Despite the differences in size, the visual distinction between the smallest and largest waning crescents may not be significant to the naked eye [5]
抬头看！15日凌晨将迎本年度最小残月
Xin Hua She·2026-01-13 08:30