may day is may 1的问句是什么

问题描述:

may day is may 1的问句是什么

When is May day?
五一劳动节是那天?
节日有两个词: festival ; Day
Day前不用冠词
如: Children's Day, Teachers' Day
festival 前要用冠词
如: the Spring Festival, the Mid-autumn Festival

when is the May Day?