Other hours, EST to JST
Searched as
“11 pm est to jst”, “11pm est to jst”, “23:00 est to jst”, “11 pm est in jst”, “what is 11 pm est in jst”, “11 pm eastern time (us) to japan standard time”, “11 PM EST = ? JST” and “est to jst 11 pm”: the answer is 12 PM JST the next day, and the converter above lets you change the minutes.
How the conversion works
It moves with daylight saving: in mid-January 11 PM EST is 1 PM (JST); in mid-July it is 12 PM (JST). The live converter above always uses today's offsets.
EST: Eastern Time covers New York, Washington DC, Miami, Atlanta, Toronto and the east coast of the United States and Canada. It is UTC−5 in winter (EST) and UTC−4 in summer (EDT).
JST: Japan Standard Time is UTC+9 all year; South Korea shares the same offset.
Full table: EST to JST converter (every hour of the day). Reverse it: JST to EST. Need an alarm at that moment? Use the zone alarm above; it rings at 12 PM JST on your device.
Questions
Will the alarm ring if I close the tab or the laptop?
No. No website can ring after the browser is closed or the computer sleeps. Keep this tab open, plug in, and the clock keeps the screen awake for you. The Ready-to-ring check under the clock shows what is set up correctly.
Does it work on my phone?
Yes on Android while the tab is open (behind other tabs is fine). On iPhone the page must stay in the foreground because Safari does not let web pages play sound from the background. Add it to the Home Screen for a full-screen bedside clock.
Is it loud enough for heavy sleepers?
Pick Loud buzzer or Siren, set the volume slider to full, and switch on the sums-to-stop option in Settings so the alarm cannot be dismissed half asleep. The sunrise light brightens the screen before the alarm too.
Can I use my own sound?
Yes. In Settings, choose an MP3, WAV or OGG file. It is stored in this browser only and never uploaded. There are also 60 built-in sounds, from a twin-bell alarm clock and a rooster to an air horn and a music box, on the sounds page.
What do the sleep sounds do?
Rain, brown noise, white noise, fan and ocean are generated in the browser and play until the alarm, then fade out as it rings. They keep the tab active through the night.
Does it need an internet connection?
Only to load the page the first time. Alarms, sounds, the sleep calculator and the sunrise math all run on your device, and the page works offline once it has been opened.
Is anything stored or sent?
Alarms and settings are saved in your browser's local storage. Nothing is sent to a server, and there is no account.
Is 11 PM EST the same as 12 PM JST every day?
Only while both zones keep the same offset. When either side enters or leaves daylight saving the answer shifts by an hour, which is why the converter recalculates from today's date.
What day is it in JST when it is 11 PM in EST?
It is the next day in JST today; the table on the pair page shows the −1d/+1d markers for every hour.