Set the alarm clock for 3:16 am

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Going to bed for a 3:16 am alarm

  • Asleep by 6:01 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 7:31 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 9:01 pm — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

3:16 am across the country

Sydney3:16 am
Brisbane3:16 am
Adelaide2:46 am
Perth1:16 am
Darwin2:46 am

Times are worked out live in your browser, so daylight saving is already accounted for.

Online alarm clock for 3:16 am

While you watch the clock for your pre-dawn boat-fishing departure, set the alarm for 3:16 am so the agreed moment does not slip past. There are 44 minutes until 4:00 am, enough time to check the weather, load the last bit of tackle and confirm which ramp you are using without losing track of when you need to move.

A quiet house can make headphones seem sensible while you wait, but they may capture the alarm sound without you noticing. Check the browser’s audio output before settling down, then leave the headphones disconnected unless you intend to wear them. This browser alarm needs to remain active and able to play sound; otherwise your boat departure may arrive with no audible warning. A separate phone alarm is a useful backup for a departure you cannot afford to miss.

Preparing for the ramp at 3:16 am means moving through darkness before your eyes have much help from the sky. Place a torch beside your keys, angle its beam down while loading gear, and avoid switching on bright indoor lights just before leaving. Have the boat’s navigation lights checked earlier, too, so you are not tracing cables at the water’s edge. Keeping the immediate area softly lit makes it easier to find small items while preserving a clear view outside.

Common questions

Does the alarm work if my laptop goes to sleep?

Not reliably. If the device sleeps or the screen locks, the browser tab pauses along with it, so the alarm may not fire on time or at all. Adjust your power settings if you're relying on this over a longer stretch.

Do I need to create an account or download anything?

No, there's nothing to sign up for and nothing to install. Pick a time and a sound, press Start, and it runs entirely in this browser tab.

Can I change the alarm sound?

Yes, there's a short list of tones to choose from before you press Start. Pick whichever one you're most likely to actually hear — softer sounds are easier to sleep through than a firm chime or bell.

What happens once the alarm goes off?

It rings through your device's speakers on a loop until you stop it from this page. There's no separate app notification, so make sure your volume is turned up before you rely on it.