On March 20, the Vernal Equinox.
Winter ends on mach 20
in the south it ends on the 21
well they both mean pretty much the same thing. the only difference is that in 'winter's day' the apostrophe tells us that it's referring to a day belonging to winter. With 'winter day', winter becomes an adjective describing the day
when winter comes
Groundhog Day is celebrated on February 2 in the US and Canada. According to folklore, if a groundhog emerging from its burrow on this day fails to see its shadow, it will leave the burrow, signifying that winter will end soon. If the groundhog sees its shadow, the groundhog will supposedly retreat into its burrow, and winter will continue for six more weeks.
MARCH 19, 2010
Sunday February 28th
In the winter. (Christmas, Christmas Eve, New Years, or any day from the begening of winter to the end.)
Winter Solstice
On the day of the winter solstice - December 21 or 22 each year - (lasting until the day of the spring equinox).
December 21, which is the first day of winter in every other state
well winter vacation ends usually the first Monday in January. but it is different for every school.