Time Keeping Office

To ensure the maintenance of the precise time, the Time Keeping Office uses a number of cesium atomic clocks. Artificial satellites (GPS) link the office with other time keeping centers over the world.
As the center of Asian participation in the international time- comparison network, the office contributes to the maintenance of International Atomic Time (TAI) and to the determination of world wide standard times.

	Network Time Servers
Cesium Clock (Four of them are installed.) (A Hydrogen-Maser frequency standard is also installed for VLBI observations.)