What is LSJTime?

LSJTime (atimeis.org) is a global time lookup and timezone conversion website. It helps you compare local times across cities, understand time differences, and plan meetings across time zones.

Who runs this website?

LSJTime is created and operated by an independent developer.

  • Operator: Tony Liu
  • Location: Beijing, China
  • Role: Independent Web Developer
  • Contact Email: [email protected]

Core features

  • Live world clock: Real-time time display for major global cities.
  • Time zone comparison: Compare two cities and see the time difference instantly.
  • DST awareness: Automatically adapts to daylight saving time changes.
  • Practical tools: Date calculator, countdown timer, calendar and more.

How timezones and accuracy are handled

LSJTime is built to provide reliable, standards-based time information. Below is a brief overview of how it works technically:

  • Timezone data: We rely on the IANA Time Zone Database as exposed by modern browsers and operating systems, using standard zone IDs such as America/Los_Angeles and Asia/Shanghai for all timezone calculations.
  • Daylight Saving Time (DST): DST transitions are handled automatically according to each region’s IANA rules. If a city uses DST, its clock will switch at the correct local time; if a region does not observe DST, its time remains on standard time all year.
  • Refresh mechanism: When the page loads, LSJTime first aligns with your device clock, then a unified front-end time engine updates all displayed clocks at a fixed interval (typically every second), so multiple cities share the same timing baseline instead of running separate drifting timers.
  • Expected accuracy: Under normal conditions, on a device with correct system time, the displayed time is usually within one second of your system clock. Network latency only affects initial page load, not the ongoing ticking. If your device clock is inaccurate, the site’s time display will inherit that offset.

How the site is funded

To cover server costs and keep improving the website, we may display ads via Google AdSense. Learn more in our Advertising Policy.

Get in touch

Questions, bug reports, or partnership inquiries are welcome. Please visit Contact Us.