2025 Summer Calendar Schedule

2025 Summer Calendar Schedule. Nascar is expected to make big changes to the 2025 cup series playoff schedule that include new tracks being added while others are shifted to the regular. Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth's.

Two weeks, december 23, 2024 to january 3, 2025, inclusive. Academic calendars are subject to change without notice.