Time Announcement
Reads the current time aloud and automatically announces it at regular intervals you choose
Features
Auto-announce at round times
Choose from 6 announcement intervals: 1 to 60 minutes
Corrected to server time
Accurate time even if your device clock is off
Instant announcement with one button
Check the current time as an alternative to the 117 time service
Audio without sound files
Uses the browser's built-in text-to-speech
How to Use
Select announcement interval
Choose from 1, 5, 10, 15, 30, or 60 minutes. Default is 15 minutes
Press the "Start" button
Announcements begin automatically at round times
Instant announcement also available
Use "Speak now" to hear the current time immediately
Stop with the "Stop" button
The button changes to stop mode, and announcements will not sound
Use Cases
Time management for remote work or studying
Track time passing by ear without looking at the screen
Check time as an alternative to 117
Use it to set the time on your wristwatch or wall clock
During cooking or housework
Know the time by ear while your hands are busy
When it's hard to see the screen
When you have vision concerns or viewing from a distance
Basic Knowledge
What the 117 time service announces
117 is a time announcement service number in Japan that provides the current time by voice when called from a landline. It announces the time every 10 seconds, and a time signal sound immediately after indicates the second mark precisely.
- Why seconds are announced：For setting clocks, minute information alone is insufficient, so 117 uses audio to mark the exact second.
- Difference from audio reading：Browser text-to-speech has a slight delay before speaking, making it unsuitable for second-precise timing.
Why computer and smartphone clocks drift
Device clocks count time using internal crystal oscillators, which drift slightly due to temperature and individual variations. Most devices use time synchronization (NTP) to align with external time servers, removing this drift.
- Time synchronization (NTP)：A system that distributes accurate time over the network, correcting by treating half the round-trip communication time as the one-way delay.
- When drift becomes larger：Devices not connected to the network for long periods or with manually set times are more prone to significant drift.
Safety and Privacy
Server-side processing
Input is processed on the server; only information necessary for the inquiry is sent.
Temporary processing only
For Obtaining accurate current time, temporary processing occurs on the server, then data is discarded after results are returned.
Communications encrypted with HTTPS
All sent and received data is encrypted by TLS and cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
Only time requests are sent
Input contents are not sent, and audio speech is generated within the browser without recording.
Updates
- update #260
New tool "Time Signal" added. Voice reads the time at your chosen interval