first day of spring (lunisolar calendar)
Refers to the beginning of spring in the traditional 二十四節気 (24 solar terms), around February 4. Commonly used in calendars, seasonal greetings, and cultural contexts.
See also: 二十四節気
This year's first day of spring (by the traditional calendar) is February 4th.
Even after the start of spring, cold days continue.
Today, the Japanese archipelago reached the first day of spring.
As we enter the season of early spring, how have you been?
According to the calendar it's already the first day of spring, but the cold weather continues.