Groundhog Day 
noun
1(In North America) 2 February, when the groundhog is said to come out of its hole at the end of hibernation. If the animal sees its shadow—i.e. if the weather is sunny—it goes back into its hole, which portends six weeks more of winter weather.With Groundhog Day but a distant memory, it's time for local newscasters to dust off the perennial V-Day human interest story....
- As most Americans know, Groundhog Day is February 2.
- An important part of preparing for our trek to Punxsutawney involved doing some background research on the whole Groundhog Day tradition.
1.1A situation in which a series of unwelcome or tedious events appear to be recurring in exactly the same way: she lived an unrelenting Groundhog Day of laundry, shopping, and rearing us kids...
- It is Groundhog Day in the Democrat primaries.
- Indeed, when they scored two tries early in the second half to take the lead, there was an air of Groundhog Day dread among an anxious crowd.
- The only guarantee is that it will come again: Every day here is Groundhog Day.
In reference to the 1993 film Groundhog Day, in which the central character finds himself repeatedly reliving the events of a particular Groundhog Day