Will we lose or gain an hour of sleep during the time change? When do clocks spring forward? What to know about daylight ...

The first day of astronomical spring in 2026 is Friday, March 20. Daylight saving time will begin on Sunday, March 8, when clocks "spring forward" one hour. Astronomical seasons are based on the Earth ...

二十四节气是中国古代根据太阳在黄道上的位置变化，结合农业活动和气候特点，将一年划分为24个时段的一种时间划分方式。每个节气大约相隔15天，反映了季节、气候和物候的变化。

It may sound straighforward, but when spring starts depends on what system you are using.

The first day of spring in the Northern Hemisphere is Friday, March 20, 2026. The spring equinox creates roughly 12 hours of daylight and 12 hours of night across the world. Spring in the Northern ...