Alarm for 1:00 AM
Set a free online alarm for 1:00 AM. This page opens with the alarm time already filled in as 1:00 AM — just press Set alarm and keep the tab open. It rings with a built-in sound at 1:00 AM. No download, no signup.
Common uses
- A wake-up alarm
- A reminder before an appointment
- A nap or break alarm
- A medication or call reminder
How to set an alarm for 1:00 AM
- The time is already filled in as 1:00 AM.
- Add an optional label such as "Wake up" or "Meeting".
- Press Set alarm. It appears in the list below.
- Leave this tab open. The alarm rings at 1:00 AM — press Stop to silence it.
What time is 1:00 AM?
1:00 AM is written 01:00 in 24-hour (military) time. It falls 1 hour after midnight — about 4% of the way through the day. From 1:00 AM it is 11 hours until noon.
Why people set a 1:00 AM alarm
- Submitting work before a deadline in another region that lands at 1:00 AM your time.
- Breaking up a night shift — 1:00 AM marks a meal break or handover on many overnight rotas.
- A reminder for a night feed or medication that has to happen at 1:00 AM.
- Watching a meteor shower, eclipse or rocket launch scheduled deep in the night.
FAQ
Does the alarm ring if I close the tab?
No. The alarm runs in your browser, so the tab must stay open. You can minimize the window, but don't close the tab.
Are my alarms saved?
Yes, they're stored locally in your browser (localStorage). They are not sent to any server.
Why is there no sound at first?
Browsers block audio until you interact with the page. Press a button once and the alarm sound will work.
What is 1:00 AM in 24-hour time?
1:00 AM is 01:00 in 24-hour notation.
How far through the day is 1:00 AM?
1:00 AM is 1 hour after midnight, which is about 4% of a 24-hour day.
How early should I open this page before 1:00 AM?
Any time — the alarm fires when your device clock reaches 1:00 AM, whether that's minutes or hours away. Just leave the tab open.