⏱️ represents stopwatch, typically shown as a stopwatch used to time runs, sprints, or short intervals.

🕧 represents twelve-thirty, typically shown as an analog clock face reading 12:30.

🕞 represents three-thirty, typically shown as an analog clock face set to 3:30.

⌚ represents watch, typically shown as a wristwatch with a round face and a band.

🕐 represents one o’clock, typically shown as an analog clock face with the hour hand at 1 and the minute hand at 12.