Year Up Fall 2025 Fall. 22, 2025, and how to observe the changing seasons and the sunrise and sunset. From barrel jeans to leopard prints, these are the 2025 denim trends you need to know for fall—and how to style them for your most fashionable season yet.

Find out when autumn/fall starts and ends in 2025 for both the northern and southern hemispheres. Find out why day and night are not exactly equal, and.