0100 military time is 1:00 AM
0100 in military time is 1:00 AM, at night. It is said “zero one hundred”.
- Say it
- “zero one hundred”, informally “oh one hundred” (common usage; no manual spells out 0000 to 0059)
- 24-hour clock
- 01:00
How to convert 0100 to standard time
- The hour is 01, which is less than 12, so the time is AM (before noon).
- Drop the leading zero (01 becomes 1), keep the minutes (00) and add AM: 1:00 AM.
And the other way: 1:00 AM in military time is 0100: write the hour with two digits (a leading zero) and leave out the colon and AM.
How to say 0100
Say “zero one hundred”. You may also hear “oh one hundred”; the manuals say “zero”. Spoken, “hours” often follows: “zero one hundred hours”. In writing, the Army and Air Force leave “hours” out. How military time is said and written.
- Military time
- 0100
- Standard time
- 1:00 AM
- 24-hour clock
- 01:00
- Part of the day
- Night
0100 with a time zone
On its own, 0100 is a local time: 0100 in New York is 1:00 AM in New York. Written with a Z, as 0100Z, it is Zulu time (UTC), which in US time zones is:
| 0100Z in | Daylight time (March to November) | Standard time (November to March) |
|---|---|---|
| EasternNew York | 2100 9:00 PM, the day beforeUTC−4 · Q | 2000 8:00 PM, the day beforeUTC−5 · R |
| CentralChicago | 2000 8:00 PM, the day beforeUTC−5 · R | 1900 7:00 PM, the day beforeUTC−6 · S |
| MountainDenver | 1900 7:00 PM, the day beforeUTC−6 · S | 1800 6:00 PM, the day beforeUTC−7 · T |
| PacificLos Angeles | 1800 6:00 PM, the day beforeUTC−7 · T | 1700 5:00 PM, the day beforeUTC−8 · U |
“The day before” and “the next day” count from the Zulu date. US daylight time runs from the second Sunday in March to the first Sunday in November (NIST). Any Zulu time: Zulu time now.
Times around 0100
Every quarter of this hour: 0100 · 0115 · 0130 · 0145
Questions people ask
What is 0100 in military time?
0100 in military time is 1:00 AM, at night.
How do you say 0100 in military time?
Say “zero one hundred”. You may also hear “oh one hundred”; the manuals say “zero”. Spoken, “hours” often follows: “zero one hundred hours”. In writing, the Army and Air Force leave “hours” out.
What is 1:00 AM in military time?
1:00 AM in military time is 0100: write the hour with two digits (a leading zero) and leave out the colon and AM.
What is 0100Z in Eastern time?
0100Z (Zulu, which is UTC) is 2100 (9:00 PM) the day before in Eastern Daylight Time and 2000 (8:00 PM) the day before in Eastern Standard Time.
All the hours and minutes of the day are in the military time chart.