There are 17 hours and 4 minutes until 9:23 AM today (09:23 24-hour format). If the time has already passed today, the countdown is to the same time tomorrow.
Full 24-hour clock reference
| 12-hour | 24-hour | 12-hour | 24-hour |
|---|---|---|---|
| 12:00 AM (midnight) | 00:00 | 12:00 PM (noon) | 12:00 |
| 1:00 AM | 01:00 | 1:00 PM | 13:00 |
| 2:00 AM | 02:00 | 2:00 PM | 14:00 |
| 3:00 AM | 03:00 | 3:00 PM | 15:00 |
| 4:00 AM | 04:00 | 4:00 PM | 16:00 |
| 5:00 AM | 05:00 | 5:00 PM | 17:00 |
| 6:00 AM | 06:00 | 6:00 PM | 18:00 |
| 7:00 AM | 07:00 | 7:00 PM | 19:00 |
| 8:00 AM | 08:00 | 8:00 PM | 20:00 |
| 9:00 AM | 09:00 | 9:00 PM | 21:00 |
| 10:00 AM | 10:00 | 10:00 PM | 22:00 |
| 11:00 AM | 11:00 | 11:00 PM | 23:00 |
💡 Did you know? The 12-hour clock with AM/PM is used primarily in the US, UK, Canada, Australia, and the Philippines. Most other countries (and the ISO) use 24-hour time. The US Navy and military worldwide use 24-hour time to avoid AM/PM confusion in critical operations.
Frequently Asked Questions
There are 17 hours and 4 minutes until 9:23 AM today. If 9:23 AM has already passed today, the countdown is to the same time tomorrow.
9:23 AM = 09:23 in 24-hour military time. AM times convert directly (12:00 AM = 00:00, 1:00 AM = 01:00, etc.). PM times add 12 (1:00 PM = 13:00, 11:00 PM = 23:00).
12:00 AM is midnight (start of day). 12:00 PM is noon (middle of day). This is the convention in the US, UK, Canada, and Australia. Some countries (especially in Europe) use different conventions, but our calculator uses the US standard per ISO 8601.
If 9:23 AM has already passed today, our calculator shows the time until the same time tomorrow (approximately 24 hours minus the elapsed time). This is the most common use case for daily reminders.
The 12-hour clock uses AM/PM and runs 1:00 to 12:59 twice per day. The 24-hour clock runs 00:00 to 23:59 and is used in the military, science, and most of the world outside the US. ISO 8601 requires 24-hour format.
Use your phone's alarm app, Google Calendar, or any reminder tool. Our 24-to-12 converter and 12-to-24 converter help if you need a different format.
5:00 PM = 17:00 in 24-hour format. To calculate: subtract current time from 17:00. Our calculator above handles this — just enter 5:00 PM. The result depends on what time it is right now.
Midnight = 12:00 AM = 00:00. Time until midnight = 24 hours minus the current time. At 9:00 PM, midnight is 3 hours away. At midnight itself, midnight is 24 hours away (tomorrow's midnight).