Time & Frequency Laboratory · Noto

Reference time and clock offset

Syncing…

Coordinated Universal Time · UTC

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PC time (client): —

Local sidereal · Noto

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Mean sidereal · Greenwich

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Modified Julian Day

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Day of year · UTC

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Week of year · UTC

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Leap year

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1PPS offset · Maser-H vs GPS

-9.354µs

Offset RMS

168ps

Measurement date

23/08/2026

Reference MJD

61275.230

1PPS offset measured with a T4Science iMaser i80 hydrogen maser, a Motorola M12+ (TAC32PLUS/NTP) GPS receiver and a Keysight 53230A counter. A minus sign indicates that the Maser-H is late on the GPS UTC.