Groundhog day
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in the US, 2 February, which, according to an old story, is the day the groundhog wakes up after sleeping through the winter. If it sees its shadow on this day, there will be six more weeks of winter, and if it does not, spring will start early.
Groundhog day meaning & definition 1 of Groundhog day.
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a situation in which events that have happened before happen again, in what seems to be exactly the same way:
Groundhog day meaning & definition 2 of Groundhog day.