3月21日，是全年节日最多的一天

1.世界睡眠日(World Sleep Day)

2.世界森林日(World Forest Day)

3.世界儿歌日(World nursery rhyme day)

4.世界诗歌日(World Poem Day)

5.世界唐氏综合症日(World down syndrome day)

6.消除种族歧视国际日(International Day for the Elimination of Racial Discrimination)

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