Copyright © 2026 Kotomora. All Rights Reserved.

Words Kanji Guides About

正子 (しょうし) Japanese meaning | Kotomora

正しょう子し

しょ

う

し

Freq.FrequencyTop 100,000

Meanings

1

noun

Refers to exactly 12:00 AM, the middle of the night. Often used in formal or technical contexts, such as schedules or astronomical descriptions.

正しょう子しを過すぎると日ひ付づけが変かわる。
The date changes after midnight.

Kanji

正correct, justice, righteous
子child, sign of the rat, 11PM-1AM

Similar words

深しん夜や
深夜 refers to the late-night period in general, not specifically 12:00 AM. 正子 is more precise and less common in everyday conversation.

Etymology

The kanji 正 means 'correct' or 'exact', and 子 here is an old temporal marker for the hour of the rat (midnight). The reading しょうし is the on'yomi.