Japan Standard Time Group

• What's New
• Japan Standard Time (JST)
• Transmission Information
• What we do
• JJY
• Time Dissemination Service
• FAQs and Data
  

Information

A leap second adjustment will be performed on July 1, 2012

A commemorative card of 10th anniversary of Hagane yama LF station

Welcome to Japan Standard Time (JST) Group. JST Group plays an important role in the Generation, Comparison, and Dissemination of Japan Standard Time and Frequency standard. Please choose the contents you'd like to use.

	What's New
	What we do
	The Information of Standard-time and Frequency-signal Emission (JJY) (The users of radio wave clock see here for more information, please)
	Time Dissemination Service (NTP,TEL-JJY,Time Business,calibration)
	FAQs and Data

Contact Us

Please contact us if you have any questions, comments, corrections, or suggestions.

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