Preposition - "At"

Preposition – “At”

The preposition at can be used to indicate a specific moment or point in time. Here are some examples: The meeting is scheduled at 3:00 PM. I'll be ready to leave at 8:30 in the morning.

Preposition - "About"

Preposition – “About”

In these examples, about is used to convey an approximate or estimated value or quantity, indicating that it's not exact but close to the stated amount of time.