(ぜんぜんじつ)

ぜんぜんじつ
noun
two days before; the day before yesterday (relative)
1. two days before (a specified event or date)
The day that is two days before a referenced event or date. Unlike 一昨日 (the day before yesterday, relative to today), 前々日 is used relative to any specified date.
試験(しけん)前々日(ぜんぜんじつ)風邪(かぜ)()いた。
I caught a cold two days before the exam.
予約(よやく)前々日(ぜんぜんじつ)までにお(ねが)いします。
Please make your reservation by two days in advance.
結婚式(けっこんしき)前々日(ぜんぜんじつ)最終(さいしゅう)()()わせがある。
There is a final meeting two days before the wedding.

前々日(ぜんぜんじつ) means two days before a specified event or date — always relative to that event, not to the present.

ETYMOLOGY:
Compound of 前々(ぜんぜん) (two before) + (じつ) (day).

RELATED TIME WORDS:

  • 前日(ぜんじつ): the day before (an event)
  • 前々日(ぜんぜんじつ): two days before (an event)
  • 翌日(よくじつ): the day after (an event)
  • 翌々日(よくよくじつ): two days after (an event)

CONTRAST WITH 一昨日(おととい):
一昨日(おととい) means 'the day before yesterday' relative to today. 前々日(ぜんぜんじつ) is always relative to a specified date or event and is more formal, commonly appearing in written notices and schedules.