Linda Z. Shimizu

How Many Days Until 2025 Starts. Perhaps you're counting down the days until your wedding day, or you're wondering how many days there are until university starts or even how long you've got to go until you retire. Both can deal with business days and holidays.

The first day of summer is also known as the summer solstice, and in 2025 it happens on thursday, june 20 at 4:51 p.m. This year it starts on march 19 2025, at 11:06 p.m.