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Set Alarm for 3:45 AM

A precise alarm preset built for starting work before dawn. Wake at 3:45 AM with a calm routine and a productive morning plan.

By Mina Chen · Classroom & Study TimersReviewed by Priya NairUpdated
Now:02:36:17 AM
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Why 3:45 AM matters for an early shift

You’re stepping into a job that starts before sunrise. 3:45 AM gives you 2 hours and 15 minutes before a 6:00 AM start, enough time to wake, fuel, and prep without rushing.

This exact minute matters because it locks in a calm, repeatable rhythm for your early shift. Waking at 3:45 gives your brain a proper prep arc—coffee, light, and the day’s plan—before you clock in. Runs in your browser. Sound may require a click/tap to activate.

Sleep-cycle suggestion

This is optional guidance—not medical advice. If you can swing it, aim for complete 90 minutes sleep cycles around your 3:45 AM wake and adjust based on how you feel.

  • 4 cycles (6 hours): be asleep by 9:45 PM the night before.
  • 5 cycles (7.5 hours): be asleep by 8:15 PM the night before.
  • 6 cycles (9 hours): be asleep by 6:45 PM the night before.

Time zone note

Alarms rely on your device's time zone. If you cross time zones or alter the clock, 3:45 AM may drift.

Keep this tab open for the alarm to trigger reliably.

Morning routine for a sharp 3:45 AM start

Follow this routine in the first 20 minutes after waking to lock in readiness.

  • Hydrate: drink 12 oz water within 5 minutes of waking.
  • Move: 5-minute mobility circuit—10 air squats, 8 lunges per leg, 20 seconds of planks.
  • Light: open blinds or switch on a bright lamp within 15 minutes for 1000 lux.
  • Plan: write your top 2 tasks for the shift and place the list on your screen.

FAQ

Do I need to keep the tab open?
Yes. The alarm won't ring if you close the tab.
Can I change the alarm sound?
Yes. Choose a different sound in settings, then set the alarm.
Can I cancel an alarm?
Yes. Use Stop/Cancel to turn it off.
Are there presets for every minute?
Yes. There's a preset page for each minute of 12-hour time.

Authorship

See the full team
MC

Primary author

Mina Chen

Classroom & Study Timers

Pomodoro-style timing, classroom timers, exam timing patterns, and sound/notification UX.

Focuses on timers for classrooms and study sessions, including clear start/stop behavior, sound cues, and UX that works well on shared screens.

PN

Editorial review

Priya Nair

Date & Time Calculations

Date math, hour totals, week numbers, and calculators that explain results clearly.

Builds calculator content and result logic for date/hours/week/age tools, prioritizing transparent outputs, clear definitions, and predictable edge-case behavior.

Also on the team: Avery Brooks · Product & Performance Timing, Rafael Torres · Time Zones & Clocks.