Official time transmitters

Boncuk said:

In Europe DCF77 is used to syncronize all official clocks and also privately used ones. The transmitter works at 77.5KHz (located in Mainflingen close to Frankfurt/Germany) and its max. reliable range is 2000km. The receivers are very small and fit into small devices without problems.

Is there any equivalent being used in South-East-Asia region?

I possible I want to avoid using a GPS-receiver where a time signal is also available.

The signal will not be used for navigational purposes, just for accurate time keeping.

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