Last Updated：2025/11/21

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(In both the 12-hour clock and the 24-hour clock) The start of the second hour of the day; 1:00 a.m. (01:00). / (Only in the 12-hour clock) The start of the fourteenth hour of the day; 1:00 p.m. (13:00).

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Source Word

one o'clock

Noun

informal

Japanese Meaning

午前1時（24時間表示の場合、1:00 a.m.、日中の2番目の時間として） / 午後1時（12時間表示の場合、1:00 p.m.、日中の14番目の時間として）

What is this buttons?

Our train departs at one o'clock, so we should leave the house by twelve forty-five.

Google Translation / DeepL Translation

列車は午前1時に出発するので、私たちは午前0時45分までに家を出たほうがいいです。

Details

Sense（1）

The bar closes at one o'clock (= "The bar closes at 1:00 a.m.").

Google Translation / DeepL Translation

Details

Sense（2）

(Only in the 12-hour clock) The start of the fourteenth hour of the day; 1:00 p.m. (13:00).

The next train comes at one o'clock (= "The next train comes at 13:00").

Google Translation / DeepL Translation

Details

Sense（3）

(informal) A position ahead and slightly rightward (horizontal clock orientation) or almost directly above (vertical clock orientation) (from the location of the 1 mark on a clock face)