The Atomic Precision World Clock

Live Atomic Time Display

Coordinated Universal Time (UTC)

Tuesday, 16 September 2025
Syncing with atomic clock...

Your Local Time

Tuesday 16 September

Device Difference: 0ms behind

A Tool Built for Accuracy and Precision

✨ Why Atomic Clock Precision?

In a globally connected world, precise time synchronization is critical. Atomic clocks provide the most accurate time references available, essential for secure financial transactions, satellite navigation (GPS), telecommunications networks, and scientific research. iTime.live brings this precision directly to your device.

⚙️ How We Ensure Accuracy

iTime.live synchronizes directly with master atomic clocks maintained by national laboratories like Germany's PTB (Physikalisch-Technische Bundesanstalt). Our servers continuously adjust for network latency and ensure that the time displayed is accurate to the millisecond, providing unmatched reliability for your global time needs.

✅ Key Features & Benefits
  • Accurate to the millisecond.
  • Time for all major cities worldwide.
  • Automatic detection of your local time difference.
  • Ideal for international calls, scheduling, and precise planning.
🔬 PTB Technical Excellence

The Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig, Germany operates primary caesium fountain clocks that serve as the official time standard for the European Union. Through direct connection to PTB facilities, iTime.live delivers laboratory-grade time accuracy to web browsers worldwide.