Atomic Time Calculator
Convert between different atomic and astronomical time scales including UTC, TAI, GPS Time, and Terrestrial Time.
Live Atomic Clocks
UTC06:54:16
TAI06:54:53
GPS06:54:34
TT06:55:26
TAI - UTC = 37s (includes 27 leap seconds)
Time Scale Offsets
TAI - UTC37 seconds
GPS - UTC18 seconds
TT - UTC69.184 seconds
GPS Time Info
GPS Week
2419
Second of Week
86,400
Other Time Formats
Julian Date2461179.00
Modified Julian Date61178.50
Unix Timestamp1779062400
Leap Seconds27
Time Scale Definitions
- TAI: International Atomic Time, continuous count of SI seconds
- UTC: Coordinated Universal Time, TAI with leap seconds for Earth rotation
- GPS: GPS system time, no leap seconds since Jan 1980
- TT: Terrestrial Time, for astronomical calculations
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