What does 年月日 mean?
年月日 is a Japanese noun meaning “date (year, month and day)” in English. It is written as 年月日 in kanji, ねんがっぴ in hiragana, and nengappi in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
製造年月日はふたに表示されています。
The date of manufacture is shown on the lid.