What does 1:23 a.m. become when expressed in the 24-hour clock format?

What does 1:23 a.m. become when expressed in the 24-hour clock format?

• A. 0123
• B. 0130
• C. 1230
• D. 0103

Answer: (A)

When converting time from the 12-hour format to the 24-hour format, the procedure involves adjusting the hour based on whether it is in the a.m. or p.m. For times in the a.m., the hour remains unchanged, except for midnight, which is expressed as 00:00. In this case, 1:23 a.m. translates directly into the 24-hour format as 01:23. In this representation, the leading zero indicates it's before 10 a.m., and the minutes remain the same. Therefore, when expressed in four-digit format, 1:23 a.m. becomes 0123. This transformation highlights the consistency of the 24-hour clock in standardizing time representation, making it clearer when the duration of service or operation extends over the night and early morning hours.

When converting time from the 12-hour format to the 24-hour format, the procedure involves adjusting the hour based on whether it is in the a.m. or p.m. For times in the a.m., the hour remains unchanged, except for midnight, which is expressed as 00:00.

In this case, 1:23 a.m. translates directly into the 24-hour format as 01:23. In this representation, the leading zero indicates it's before 10 a.m., and the minutes remain the same. Therefore, when expressed in four-digit format, 1:23 a.m. becomes 0123.

This transformation highlights the consistency of the 24-hour clock in standardizing time representation, making it clearer when the duration of service or operation extends over the night and early morning hours.