0315 at a glance
- 12-hour time
- 3:15 AM
- 24-hour clock
- 03:15
- Say it
- zero three fifteen hours
- Part of day
- Night (after midnight)
- Minutes after midnight
- 195
- Minutes until midnight
- 1,245
- Decimal hours
- 3.25
- Share of the day gone
- 13.54%
How to convert 0315 to standard time
- The hour digits are 03. Hours 01 to 11 are the same on both clocks — just drop the leading zero: 3.
- Put a colon before the minutes and add AM: 3:15 AM.
How to say 0315
| Style | How it sounds |
|---|---|
| Military (spoken) | “zero three fifteen hours” |
| Radio, digit by digit | “zero three one five” |
| Civilian | “quarter past three in the morning” |
| Written 24-hour | 03:15 or 0315 |
Off the hour, say the hour pair and then the minutes: 03 → “zero three”, 15 → “fifteen.” Adding “hours” at the end is standard in military speech but optional elsewhere.
0315 Zulu (UTC) in US time zones
Military and aviation schedules give times in Zulu — Coordinated Universal Time — so that everyone works from one clock. When a message says 0315Z, this is the local time across the United States:
| Time zone | Standard time | Daylight time |
|---|---|---|
| Eastern (EST / EDT) | 10:15 PM (previous day) — R | 11:15 PM (previous day) — Q |
| Central (CST / CDT) | 9:15 PM (previous day) — S | 10:15 PM (previous day) — R |
| Mountain (MST / MDT) | 8:15 PM (previous day) — T | 9:15 PM (previous day) — S |
| Pacific (PST / PDT) | 7:15 PM (previous day) — U | 8:15 PM (previous day) — T |
| Alaska (AKST / AKDT) | 6:15 PM (previous day) — V | 7:15 PM (previous day) — U |
| Hawaii (HST) | 5:15 PM (previous day) — W | No daylight time |
The letter after each time is that zone’s military time-zone letter: Eastern standard time is R (Romeo, UTC−5), so 0315Z is 2215R. Daylight time runs from the second Sunday in March to the first Sunday in November; Hawaii and most of Arizona stay on standard time all year.
If 0315 is your local time
- 0315 Eastern is 0815Z in winter (EST) and 0715Z in summer (EDT).
- 0315 Central is 0915Z in winter (CST) and 0815Z in summer (CDT).
- 0315 Mountain is 1015Z in winter (MST) and 0915Z in summer (MDT).
- 0315 Pacific is 1115Z in winter (PST) and 1015Z in summer (PDT).
Times around 0315
| Change | Military | Standard |
|---|---|---|
| −60 min | 0215 | 2:15 AM |
| −45 min | 0230 | 2:30 AM |
| −30 min | 0245 | 2:45 AM |
| −15 min | 0300 | 3:00 AM |
| This time | 0315 | 3:15 AM |
| +15 min | 0330 | 3:30 AM |
| +30 min | 0345 | 3:45 AM |
| +45 min | 0400 | 4:00 AM |
| +60 min | 0415 | 4:15 AM |
Shifts that start at 0315
- An 8-hour shift starting at 0315 ends at 1115 (11:15 AM).
- A 10-hour shift starting at 0315 ends at 1315 (1:15 PM).
- A 12-hour shift starting at 0315 ends at 1515 (3:15 PM).
- To total the hours on a real time card with breaks, use the time card calculator.
0315 in everyday use
- 0315 falls in the overnight hours — the time of night shifts, red-eye flights and early deliveries. Writing it as 0315 instead of 3:15 AM removes any doubt about whether the morning or the evening is meant.
- Military slang for an uncomfortably early start is “zero-dark-thirty” — any time well before dawn, like 0315.
Frequently asked questions
What is 0315 in regular time?
0315 is 3:15 AM in regular 12-hour time.
Is 0315 AM or PM?
0315 is AM. Military times from 0000 to 1159 are AM and times from 1200 to 2359 are PM.
How do you say 0315 in military time?
Say “zero three fifteen hours.” In radio procedure each digit is spoken separately, so 0315 can also be read digit by digit.
What is 0315 Zulu in Eastern time?
0315Z is 10:15 PM (previous day) Eastern Standard Time (UTC−5) and 11:15 PM (previous day) Eastern Daylight Time (UTC−4).