Server time, practice and alerts, all in one place.
2026-11-11
Choose a time and schedule an alert. All times use Korea Standard Time (KST).
No scheduled alarms.
Scheduled alerts require browser notification permission. Device sleep and browser limits may delay them.
From checking the time to your final preparations.
Select the booking website and check its time.
Review the current time and network delay together.
Turn on hourly alerts and practice your click timing.
Check the time together with its measurement status.
Measure how long it takes to send a request and receive a response.
Use the HTTP Date header and round-trip time to estimate the offset.
Apply the measured offset when updating the clock.
Network delays and browser conditions can affect the result.
The offset from the reference clock has been measured.
Checking the offset from the reference clock.
Measurement is unavailable; showing your device time.
• Read the booking website’s instructions first.
• Keep this tab open to receive alerts.
Common questions about server time, ticketing, and course registration.
Yes, all server time checking features on time.tla.so are completely free. You can use real-time server time checking, click timing practice, on-the-hour alarms, custom server measurements, and all other features without registration.
A millisecond clock displays time in 1/1000-second units. The extra digits are interpolated in the browser after synchronization; they do not guarantee one-millisecond measurement accuracy.
They usually refer to the target website server clock. Here it is estimated from the HTTP Date header, which is only precise to one second, with RTT compensation and an uncertainty range.
Network delays and browser conditions can affect the result.
Server time means the clock a target service uses. This site estimates its difference from the service reference clock using HTTP Date and RTT/2 compensation; millisecond display does not guarantee one-millisecond accuracy.
A target server's Date header is normally precise only to one second and may be affected by proxies, CDNs, or caches. Review measurement time, RTT, uncertainty, and failure state together.
View offsets estimated from ticketing-site HTTP Date responses. Check RTT, measurement time, uncertainty, and measurement status on each card: