In Punjabi we have divided day into 8 parts, with each 2 parts have names like 1st pair (3am to 9am), 2nd pair 9am to 3pm) third pair 3pm to 9pm & final pair 9pm to 3am.
So, we usually say, 8 o clock in third pair means PM, or 8 o clock in 1st pair means AM.
So, we usually say, 8 o clock in third pair means PM, or 8 o clock in 1st pair means AM.