If you are checking a military-time schedule and see 0000, it means midnight at the beginning of a new day.
The direct conversion is:
The important distinction is between 0000 and 1200:
For a quick conversion, Calculator Online Pro’s Military-Time Converter can check the time for you without requiring manual calculations.
0000 in Military-Time Means Midnight
The answer is simple:
It is the point where one calendar day ends and the next one begins.
The sequence around midnight is:
In regular 12-hour time:
This is why 0000 is one of the most important times to understand when reading a 24-hour schedule.
What Does 0000 Stand For Exactly?
When you see 0000, read it as:
or:
Example
September 30, 0000 means midnight at the start of September 30.
It does not mean the end of September 30.
| Regular-Time | Military-Time | Position in the Day |
|---|---|---|
| 11:58 PM | 2358 | Final minutes of the previous day |
| 11:59 PM | 2359 | Last minute before midnight |
| 12:00 AM | 0000 | Start of the new day |
| 12:01 AM | 0001 | One minute after midnight |
| 12:30 AM | 0030 | 30 minutes after midnight |
| 1:00 AM | 0100 | One hour after midnight |
0000 vs 1200: Don’t Mix Up Midnight and Noon
The easiest way to remember military-time is to keep the two 12 o’clock points separate.
0000 = Midnight
0000 = 12:00 AM
This is the beginning of the calendar day.
1200 = Noon
1200 = 12:00 PM
This is noon.
1200 = noon
If you see 1200 on a schedule, do not read it as midnight.
If you see 0000, do not read it as noon.
Want to compare midnight and noon more closely? Read the Noon in Military-Time Guide →
Does 0000 Stand For the Start or End of the Day?
0000 normally identifies the start of the day.
October 15 — 0000
This means:
The previous minute was October 14 — 2359.
So the transition is:
↓
October 15, 0000
↓
October 15, 0001
This date relationship is particularly important when you’re reading overnight schedules or anything where the exact calendar date matters.
What Comes Before 0000?
The last minute before 0000 is 2359.
In standard time:
This gives you a simple reference point for reading times around midnight.
What Comes After 0000?
Immediately after midnight, the minutes continue from 0001.
| Standard-Time | Military-Time |
|---|---|
| 12:00 AM | 0000 |
| 12:01 AM | 0001 |
| 12:02 AM | 0002 |
| 12:05 AM | 0005 |
| 12:10 AM | 0010 |
| 12:15 AM | 0015 |
| 12:30 AM | 0030 |
| 12:45 AM | 0045 |
| 12:59 AM | 0059 |
| 1:00 AM | 0100 |
| 2:00 AM | 0200 |
The first two digits represent the hour, while the final two digits represent the minutes.
How Does the Date Change at 0000?
This is one of the most useful things to understand when interpreting military-time.
Suppose a schedule shows:
One minute later:
One minute after that:
So the date changes at midnight.
↓
September 29, 2359
↓
September 30, 0000
↓
September 30, 0001
The 0000 entry belongs to September 30 in this example because it marks the beginning of that date.
Is 0000 the Same as 2400?
They can identify the same instant, but the date context is different.
September 30 — 2400
can represent the same point in time as:
October 1 — 0000
The practical distinction is:
For everyday conversion, if someone asks:
the answer is:
What Is 0001 in Military-Time?

0001 = 12:01 AM.
This is the first minute after midnight.
12:01 AM → 0001
12:02 AM → 0002
This makes 0001 useful as a simple way to check whether you’ve correctly understood the midnight transition.
What Is 0030 in Military-Time?
0030 = 12:30 AM.
Notice that this is an early-morning time, not afternoon.
| Standard-Time | Military-Time |
|---|---|
| 12:30 AM | 0030 |
| 12:30 PM | 1230 |
That single difference between 0030 and 1230 changes the time by 12 hours.
Practical 0000 Military-Time Examples
Example 1: A Shift Starts at Midnight
If a work shift begins at midnight on October 1:
This means October 1 at 12:00 AM. The shift begins at the start of the new day.
Example 2: A Flight Schedule Shows 0000
If a timetable lists:
the time corresponds to 12:00 AM. Because midnight sits at the boundary between two dates, check the date shown alongside the time.
Example 3: An Appointment Is at 12:30 AM
Convert:
Not 1230. 1230 = 12:30 PM.
Example 4: A Deadline Is 0000
If a schedule gives a deadline as 0000, the exact date attached to that deadline matters.
For example:
means the deadline occurs at the beginning of October 10.
If a document instead refers to the end of October 9, it may use 2400 to describe that same instant.
0000 Military-Time Quick Reference
| Regular-Time | Military-Time | Meaning |
|---|---|---|
| 11:00 PM | 2300 | One hour before midnight |
| 11:30 PM | 2330 | 30 minutes before midnight |
| 11:59 PM | 2359 | Last minute of the day |
| 12:00 AM | 0000 | Midnight |
| 12:01 AM | 0001 | One minute after midnight |
| 12:15 AM | 0015 | 15 minutes after midnight |
| 12:30 AM | 0030 | 30 minutes after midnight |
| 12:45 AM | 0045 | 45 minutes after midnight |
| 12:59 AM | 0059 | Last minute of the 12 AM hour |
| 1:00 AM | 0100 | One hour after midnight |
| 2:00 AM | 0200 | Two hours after midnight |
Common 0000 Conversion Mistakes
Mistake 1: Thinking 0000 Stand For Noon
It doesn’t. 0000 = midnight and 1200 = noon.
Mistake 2: Calling 2359 Midnight
2359 = 11:59 PM.
It is the final minute before midnight. 0000 = midnight.
Mistake 3: Treating 0000 as the End of the Same Day
When the date is explicitly shown, 0000 identifies the beginning of that date. For example, October 20 — 0000 means the start of October 20.
Mistake 4: Confusing 0030 With 1230
These represent different times:
1230 = 12:30 PM
The leading hour digits tell you which half of the day you’re dealing with.
Mistake 5: Forgetting the Date Boundary
The transition is:
not: September 30, 2359 → September 30, 0000. The calendar date moves forward at midnight.
Need to Check a Military-Time Conversion?
If you’re checking a particular time rather than trying to remember every conversion rule, Calculator Online Pro’s Military-Time Converter gives you a quick way to verify the result.
Why Use Calculator Online Pro?
If you’re unsure whether a time should be 0000, 0030, 1200, 1230, or another 24-hour value, you can check it directly with the calculator.
Use Calculator Online Pro for More Time Calculations
A military-time conversion is sometimes only the first calculation you need.
For example, after converting a schedule to 24-hour time, you might need to determine:
Calculator Online Pro provides dedicated time calculators for these situations, including its Military-Time Converter, Time Duration Calculator, Add Time Calculator, Time to Decimal Calculator, Minutes to Hours Converter, and Seconds to Time Converter.
Instead of switching between different calculation methods, you can use the appropriate tool for the exact time problem you’re solving.
Need to calculate the time between two military-time values? Read the Military-Time Difference Guide →
0000, 1200 and 2400 at a Glance
| Military-Time | Regular-Time | Meaning |
|---|---|---|
| 0000 | 12:00 AM | Midnight / start of day |
| 0001 | 12:01 AM | One minute after midnight |
| 0030 | 12:30 AM | 30 minutes after midnight |
| 0059 | 12:59 AM | End of the 12 AM hour |
| 1159 | 11:59 AM | One minute before noon |
| 1200 | 12:00 PM | Noon |
| 1201 | 12:01 PM | One minute after noon |
| 2359 | 11:59 PM | Final minute of the day |
| 2400 | 12:00 AM | End of the referenced day |
The two numbers worth memorising are:
1200 = noon
And when you are looking at a specific date, 2400 can describe the end of that referenced day.
Looking for the dedicated midnight explanation? Read the Midnight in Military-Time Guide →
Frequently Asked Questions About 0000 in Military-Time
What Is 0000 in Military-Time?
0000 Represent midnight, or 12:00 AM. It represents the beginning of a new calendar day.
Is 0000 midnight?
Yes. 0000 is midnight.
Is 0000 AM or PM?
0000 corresponds to 12:00 AM.
What is 0000 in regular time?
0000 = 12:00 AM.
What is 0001 in regular time?
0001 = 12:01 AM.
What is 0030 in regular time?
0030 = 12:30 AM.
What is 0059 in regular time?
0059 = 12:59 AM.
What is 1200 in military-time?
1200 = 12:00 PM, or noon.
What comes before 0000?
2359 comes immediately before 0000.
What comes after 0000?
0001 comes immediately after 0000.
Does the date change at 0000?
Yes. 0000 marks the beginning of the new calendar day.
Is 0000 the same as 2400?
They can represent the same instant, but they reference it differently. 0000 identifies the beginning of a day, while 2400 can identify the end of the referenced day.
Is 0000 the same as 1200?
No. 0000 is midnight, while 1200 is noon.
Final Answer: What Does 0000 Represent?
If you need the answer quickly:
The surrounding sequence is:
or:
And the most important comparison is:
1200 = Noon
When you need to verify a particular military-time conversion, use Calculator Online Pro’s Military-Time Converter for a quick result rather than calculating it manually.
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