long day (especially in spring)
Refers to the lengthening daylight hours, particularly associated with spring. Often used in poetic or literary contexts. Compare with 夜長 (long autumn night).
See also: 夜長
On a long spring day, I like to doze off on the veranda.
Around the time of long days, it stays light until evening.
Standard kanji spelling for the long spring day.
Alternate kanji spelling; less common than 日永.
Formed from 日 “day” and the adjective stem なが- “long”; 永 is used here to write the sense “long-lasting.”