一昨日
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Noun referring to the day before yesterday. It is a fixed expression and does not require a counter. Usage example: 『一昨日は雨でした』 (ototoi wa ame deshita, 'The day before yesterday was rainy').
Theme

Two friends, Ken and User, are catching up over coffee at a café. Ken mentions a recent event and asks User about their schedule.

一昨日

おととい

day before yesterday

Time & DatesCalendar Terms

Memory Hook

Imagine counting backwards: 'yesterday' is 昨日 (kinō), so 'day before yesterday' adds an extra 'one' (一) in front — 一昨日 (ototoi). Think: 'One more day back — 一昨日!'

Cultural Note

In Japanese, 一昨日 (ototoi) is commonly used in daily conversations to refer to the day before yesterday. It's often paired with 昨日 (kinō, 'yesterday') and 今日 (kyō, 'today') when discussing recent events.

Forms

Base: 一昨日Noun referring to the day before yesterday. It is a fixed expression and does not require a counter. Usage example: 『一昨日は雨でした』 (ototoi wa ame deshita, 'The day before yesterday was rainy').