How to use the online alarm clock
Preparing beforehand for a late performance at your local theatre makes an 11:13 pm alarm useful for keeping the evening on track. It can mark the moment to collect your coat, check the ticket and leave enough time to reach the auditorium without rushing. With 12:00 am approaching, the reminder also gives the night a clear boundary after the performance.
Your theatre plans determine how the browser alarm needs to be treated. If this page is closed, the browser is quit or the phone or computer goes to sleep, the theatre reminder will not sound, so it cannot be relied upon while the screen is inactive. Keeping the alarm page open and the device awake allows the sound to play at 11:13 pm. The volume should be checked beforehand, particularly if quiet background audio could make the alert easy to miss.
After getting ready for an evening at the theatre, a bright display can feel unnecessarily harsh in a dim room. Lowering the screen brightness and using the warmer night setting makes the time easier to glance at while waiting for 11:13 pm. Placing the phone slightly farther away also avoids staring into the screen, while leaving the alarm visible and active until it sounds.
Common questions
Will it still be right when the clocks change?
Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.
Can I use this on a phone?
It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.
Does the alarm still work if I close the tab?
No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.
What happens if my laptop goes to sleep before 11:13 pm?
The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.