1.
same day; that very day
On the same day as another event or action; immediately without delay.
即日配達できます。
Same-day delivery is available.
申し込み即日から使える。
You can use it from the same day you apply.
結果は即日発表されます。
The results will be announced on the same day.
即日 emphasizes that something happens on the very same day.
COMMON COLLOCATIONS:
- 即日配達 (same-day delivery)
- 即日発送 (same-day shipping)
- 即日回答 (same-day response)
- 即日開票 (same-day vote counting)
SIMILAR EXPRESSIONS:
- 当日: on that day, the day in question
- 本日: today (formal)