3 PM; fifteen o'clock
Used in 24-hour time expressions, common in schedules, transportation, and formal announcements.
The meeting is from 3 PM.
I'll take the 3 PM Shinkansen.
三時 is the everyday 12-hour clock expression, while 十五時 is the same moment written in the 24-hour format used in formal schedules and official announcements.
Standard Arabic numeral spelling for 3 PM in schedules and digital contexts.
Kanji spelling, more formal or traditional; less common in everyday digital use.
Compound of 十五 (fifteen) and 時 (hour, o'clock).