Recently, The international earth rotation service organization(IERS) declares that the current international standard time—UTC time midnight of June 30th, 2012 plus one leap second (namely Beijing time July 1st, 2012 at 8:00 am), June 30th, at 23:59:59, the next second is recorded as 23:59:60, then comes the next day 00:00:00 (July 1st, 2012).

The NTSC responses for the generating, keeping and transmitting of our country’s standard time and standard frequency. The NTSC standard laboratory carry out the leap second regulation at 7:59:59 am on July 1st, 2012 with the worldwide synchronization, at the occasion, 7:59:60, the special phenomenon will appear. At the same time, the system will transmit the regulated standard time through long wave, short wave, low frequency time-code, internet and telephone. The user receiving time-code or information, the leap second timing will execute automatically.