also: せつじつ
noun
Refers to traditional Japanese seasonal festivals, such as the five sekku (五節句). The reading せちにち is more common; せつじつ is a rare alternate reading.
節日には、家族で特別な料理を食べる習慣があります。
On seasonal festivals, there is a custom of eating special dishes with family.
五節句は日本の代表的な節日です。
The five sekku are representative seasonal festivals of Japan.
節句 is the more common term for the five seasonal festivals (五節句). 節日 is a less frequent synonym, often used in historical or formal contexts.
Compound of 節 (seasonal division) and 日 (day). The reading せちにち is a kun'yomi-based reading, while せつじつ is an on'yomi reading. The exact historical derivation is uncertain.