What is the time corresponding to 1 p.m. in the 24 hour clock?

To convert time from the 12-hour clock (am/pm format) to the 24-hour clock, follow this rule:

• For times between 12:00 am and 12:59 am, keep the hour as is and add "hours" after the number.
• For times between 1:00 am and 11:59 am, the hour stays the same, and "hours" is added.
• For times between 12:00 pm and 12:59 pm, keep the hour as 12 in the 24-hour format.
• For times between 1:00 pm and 11:59 pm, add 12 to the hour.

Now, for 1 pm, add 12 to the hour:
1+12=131 + 12 = 131+12=13

So, 1 pm in the 24-hour clock is 13:00 hours.