[Mathematic Form 1] Convert 24-hour system into the 12-hour system
To convert the 24-hour system into the 12-hour system, follow the step below;
- If the time is between 0000 hours and 0059 hours
You should...- Add 12.00
- Add a dot between the hours and minutes
- Write am
Example:- 0035 + 12.00 = 1235. So, 0035 = 12.35am
- If the time is between 0100 hours and 1259 hours
You should...- Remove the zero if necessary
- Add a dot between the hours and minutes
- Write am or pm
Example:- 0530 = 5.30am
- 1235 = 12.35pm
- If the time is between 1300 hours and 2400 hours
You should...- Subtract 1200 from it
- Add a dot between the hours and minutes
- Write pm
Example:- 1428 - 1200 = 228. So, 1428 = 2.28pm
- 2358 - 1200 = 1158. So, 2358 = 11.58pm
More Examples:
- Convert each of the following into 24-hour system.
- 12.36am = 0036
- 3.45am = 0345
- 12.50pm = 1250
- 4.37pm = 1637
- Convert each of the following into 12-hour system.
- 0048 = 12.48am
- 0539 = 5.39am
- 1255 = 12.55pm
- 1729 = 5.29pm
