What is 4:38 AM in Military Time?

4:38 AM represented on a regular clock and an unknown time on the military clock

Why use Military Time Instead of 4:38 AM?

Military time exists to minimize miscommunication when telling the time. It helps to clearly differentiate between 4:38 am and 4:38 pm. For example if a meeting begins at 4:38 it’s not immediately clear whether that means 4:38 am or 4:38 pm.

How to Convert 4:38 AM to Military Time

1. Determine if 4:38 am is before or after midday

We can tell this by looking at whether the time is followed by am or pm. A.M. is an abbrevation of ante meridiem, which is Latin for before midday. That means 4:38 am is before midday.

2. Calculate the hours and minutes since midnight

Before we can convert to military time we need to know how much time has passed since midnight. At 4:38 am we know it is 4 hours and 38 minutes since midnight.

3. Convert hours to military time

4:38 am is before midday so we simply take our hours since midnight (4) and add a leading zero because we need two digits for military hours. That means the military time in hours is 04.

4. Combine the hours and the minutes

The military time in minutes is the number of minutes calculated in step two which is 38. Military time is given as four digits with the hours first, so the military time for 4:38 am is 0438.

What Time is 4:38 AM in Military Time?

The military time for 4:38 am is 0438. In some situations you may also need to state the military time zone. If you are stating the time in your local time zone the full military time for 4:38 am would be 0438J (J for Juliet). More commonly the time is quoted as 0438Z (Z for Zulu) which indicates 4:38 am in the UTC time zone.

How do you say 4:38 AM in Military Time?

When you are saying 4:38 am in military time you should state the digits 0438 as zero four thirty eight hours. In some cases it is not necessary to finish the message with hours. If it is recommend to observe a military time zone you might say 0438Z as zero four thirty eight hours Zulu time or simply zero four thirty eight Zulu.

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