2315 at a glance
- 12-hour time
- 11:15 PM
- 24-hour clock
- 23:15
- Say it
- twenty-three fifteen hours
- Part of day
- Night
- Minutes after midnight
- 1,395
- Minutes until midnight
- 45
- Decimal hours
- 23.25
- Share of the day gone
- 96.88%
How to convert 2315 to standard time
- The hour digits are 23, which is past noon. Subtract 12 from the hour: 23 − 12 = 11.
- Keep the minutes (15), insert a colon and add PM: 11:15 PM.
How to say 2315
| Style | How it sounds |
|---|---|
| Military (spoken) | “twenty-three fifteen hours” |
| Radio, digit by digit | “two three one five” |
| Civilian | “quarter past eleven at night” |
| Written 24-hour | 23:15 or 2315 |
Off the hour, say the hour pair and then the minutes: 23 → “twenty-three”, 15 → “fifteen.” Adding “hours” at the end is standard in military speech but optional elsewhere.
2315 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 2315Z, this is the local time across the United States:
| Time zone | Standard time | Daylight time |
|---|---|---|
| Eastern (EST / EDT) | 6:15 PM — R | 7:15 PM — Q |
| Central (CST / CDT) | 5:15 PM — S | 6:15 PM — R |
| Mountain (MST / MDT) | 4:15 PM — T | 5:15 PM — S |
| Pacific (PST / PDT) | 3:15 PM — U | 4:15 PM — T |
| Alaska (AKST / AKDT) | 2:15 PM — V | 3:15 PM — U |
| Hawaii (HST) | 1:15 PM — 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 2315Z is 1815R. 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 2315 is your local time
- 2315 Eastern is 0415Z in winter (EST) and 0315Z in summer (EDT).
- 2315 Central is 0515Z in winter (CST) and 0415Z in summer (CDT).
- 2315 Mountain is 0615Z in winter (MST) and 0515Z in summer (MDT).
- 2315 Pacific is 0715Z in winter (PST) and 0615Z in summer (PDT).
Times around 2315
| Change | Military | Standard |
|---|---|---|
| −60 min | 2215 | 10:15 PM |
| −45 min | 2230 | 10:30 PM |
| −30 min | 2245 | 10:45 PM |
| −15 min | 2300 | 11:00 PM |
| This time | 2315 | 11:15 PM |
| +15 min | 2330 | 11:30 PM |
| +30 min | 2345 | 11:45 PM |
| +45 min | 0000 | 12:00 AM (next day) |
| +60 min | 0015 | 12:15 AM (next day) |
Shifts that start at 2315
- An 8-hour shift starting at 2315 ends at 0715 (7:15 AM the next day).
- A 10-hour shift starting at 2315 ends at 0915 (9:15 AM the next day).
- A 12-hour shift starting at 2315 ends at 1115 (11:15 AM the next day).
- To total the hours on a real time card with breaks, use the time card calculator.
2315 in everyday use
- 2315 is late evening — 11:15 PM. Quiet hours at many campgrounds, hotels and apartment buildings start around 2200, and night-shift handovers often happen in this window.
- For 2000 to 2359, subtract 12 from the whole hour: 23 − 12 = 11, so 2315 is 11:15 PM. The day ends 45 minutes later, when the clock rolls over to 0000.
Frequently asked questions
What is 2315 in regular time?
2315 is 11:15 PM in regular 12-hour time. Subtract 12 from the hour (23 − 12 = 11) and add PM.
Is 2315 AM or PM?
2315 is PM. Military times from 0000 to 1159 are AM and times from 1200 to 2359 are PM.
How do you say 2315 in military time?
Say “twenty-three fifteen hours.” In radio procedure each digit is spoken separately, so 2315 can also be read digit by digit.
What is 2315 Zulu in Eastern time?
2315Z is 6:15 PM Eastern Standard Time (UTC−5) and 7:15 PM Eastern Daylight Time (UTC−4).