What Does 0000 Mean in Military Time? 0000 Explained

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:

12:00 AM = 0000

The important distinction is between 0000 and 1200:

0000 = 12:00 AM = midnight
1200 = 12:00 PM = noon

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:

0000 = 12:00 AM

It is the point where one calendar day ends and the next one begins.

The sequence around midnight is:

2358 → 2359 → 0000 → 0001 → 0002

In regular 12-hour time:

11:58 PM → 11:59 PM → 12:00 AM → 12:01 AM → 12:02 AM

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:

Midnight

or:

12:00 AM

Example

September 30, 0000 means midnight at the start of September 30.

It does not mean the end of September 30.

Regular-TimeMilitary-TimePosition in the Day
11:58 PM2358Final minutes of the previous day
11:59 PM2359Last minute before midnight
12:00 AM0000Start of the new day
12:01 AM0001One minute after midnight
12:30 AM003030 minutes after midnight
1:00 AM0100One 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.

0000 = midnight
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:

12:00 AM at the beginning of October 15

The previous minute was October 14 — 2359.

So the transition is:

October 14, 2359
↓
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.

2357 → 2358 → 2359 → 0000

In standard time:

11:57 PM → 11:58 PM → 11:59 PM → 12:00 AM
2359 = 11:59 PM
0000 = 12:00 AM
0001 = 12:01 AM

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-TimeMilitary-Time
12:00 AM0000
12:01 AM0001
12:02 AM0002
12:05 AM0005
12:10 AM0010
12:15 AM0015
12:30 AM0030
12:45 AM0045
12:59 AM0059
1:00 AM0100
2:00 AM0200

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:

September 29 — 2359

One minute later:

September 30 — 0000

One minute after that:

September 30 — 0001

So the date changes at midnight.

September 29, 2358
↓
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:

0000 → start of the referenced day
2400 → end of the referenced day

For everyday conversion, if someone asks:

“What is 12:00 AM in military-time?”

the answer is:

0000

What Is 0001 in Military-Time?

What Does 0000 Mean in Military Time?

0001 = 12:01 AM.

This is the first minute after midnight.

12:00 AM → 0000
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-TimeMilitary-Time
12:30 AM0030
12:30 PM1230

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:

October 1 — 0000

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:

Departure — 0000

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:

12:30 AM → 0030

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:

October 10 — 0000

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-TimeMilitary-TimeMeaning
11:00 PM2300One hour before midnight
11:30 PM233030 minutes before midnight
11:59 PM2359Last minute of the day
12:00 AM0000Midnight
12:01 AM0001One minute after midnight
12:15 AM001515 minutes after midnight
12:30 AM003030 minutes after midnight
12:45 AM004545 minutes after midnight
12:59 AM0059Last minute of the 12 AM hour
1:00 AM0100One hour after midnight
2:00 AM0200Two 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:

0030 = 12:30 AM
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:

September 30, 2359 → October 1, 0000

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?

Instant time conversion
No manual arithmetic required
Useful for checking AM/PM and 24-hour formats
Helps distinguish midnight from noon
Useful for schedules, appointments and time records
Easy to use directly in your browser

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:

How long a shift lasts
The time between two events
How much time to add to a starting time
A decimal representation of a duration
Minutes converted into hours
Seconds converted into a readable time format

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-TimeRegular-TimeMeaning
000012:00 AMMidnight / start of day
000112:01 AMOne minute after midnight
003012:30 AM30 minutes after midnight
005912:59 AMEnd of the 12 AM hour
115911:59 AMOne minute before noon
120012:00 PMNoon
120112:01 PMOne minute after noon
235911:59 PMFinal minute of the day
240012:00 AMEnd of the referenced day

The two numbers worth memorising are:

0000 = midnight
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:

0000 = 12:00 AM = Midnight

The surrounding sequence is:

2359 → 0000 → 0001

or:

11:59 PM → 12:00 AM → 12:01 AM

And the most important comparison is:

0000 = Midnight
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.

Check your military-time conversion.

Convert your time and verify the result directly.

Military-Time Converter →

© 2026 Calculator Online Pro
Expert Guides for Chronology, Mathematics, and Data Logic.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top