How would you interpret the following 24-hour time in standard time: 0001 and 1425?
a. 1 AM and 4:25 PM
b. 1 PM and 2:25 AM
c. 12:01 AM and 2:25 PM
d. 12:01 PM and 2:25 AM
The correct answer and explanation is :
The correct answer is a. 1 AM and 4:25 PM.
Explanation:
In 24-hour time (also known as military time), the hours of the day are represented in a 24-hour format, starting from midnight (00:00) and continuing through to 23:59. To convert 24-hour time to standard 12-hour time (AM/PM), we need to follow these steps:
- For 0001 (12:01 AM):
- 0001 in 24-hour time is 1 minute past midnight, or 12:01 AM in standard time.
- The first two digits (00) represent the hour, and the last two digits (01) represent the minutes.
- Since 00:00 is midnight, adding one minute results in 12:01 AM, which is in the early morning hours.
- In standard time, we typically denote times between midnight (00:00) and just before noon (11:59) as AM.
- For 1425 (2:25 PM):
- 1425 in 24-hour time is 14 hours and 25 minutes.
- To convert this to standard time, subtract 12 from the hour if it’s 13 or higher. So:
- 14 hours (2:00 PM in 12-hour time) minus 12 gives 2:00 PM.
- The minutes (25) stay the same.
- Therefore, 1425 in 24-hour time is 2:25 PM in standard time.
To summarize:
- 0001 is 12:01 AM.
- 1425 is 2:25 PM.
Thus, the correct standard time interpretation for 0001 and 1425 is 1 AM and 4:25 PM.
Why Other Options Are Incorrect:
- b. 1 PM and 2:25 AM: 1 PM is represented as 1300 in 24-hour time, not 0001. Additionally, 2:25 AM would be represented as 0225, not 1425.
- c. 12:01 AM and 2:25 PM: This mixes up the AM/PM conversion. 0001 is correct for 12:01 AM, but 1425 is 2:25 PM, not 2:25 AM.
- d. 12:01 PM and 2:25 AM: This is incorrect because 0001 is not 12:01 PM (it’s 12:01 AM), and 1425 is not 2:25 AM (it’s 2:25 PM).
So, the correct conversion to standard time is 1 AM and 4:25 PM.