西暦 せいれき れい れい れい ねん問題 もんだいだったら
seirekini reirei reinen mondaidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 西暦2000年問題

1. If it were the year 2000 problem; If the year 2000 problem occurred

Tara Conditional
Computing