title: Suiko period
text: The Suiko period  was an era of 25 years during the Asuka period of Japanese history.  This period overlaps all but 7 years of Empress Suiko's reign (604-628) or it is used as a synonym for her reign (593-628).
  
  Calendar
  The  adoption of the sexegenary cycle calendar (Jikkan Jūnishi) was a significant event in the reign of Empress Suiko.  This pre-dates the system of  which was started in 645.
  
  Events of the Suiko period
   604:  In the 12th year of Suiko's reign, Japan organized its earliest Imperial calendar, also known as the "Suiko period".
   628: In the 35th year of Suiko, the empress abdicated; and the period ended.
  
  Related pages
   Regnal name
   List of Japanese eras
  
  Notes
  
  References
   Nussbaum, Louis-Frédéric and Käthe Roth. (2005).  Japan encyclopedia. Cambridge: Harvard University Press. ;  OCLC 58053128
   Titsingh, Isaac. (1834).  Annales des empereurs du Japon (Nihon Odai Ichiran).  Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691
   Tsuchihashi, Paul, S.J. (1952). .  Tokyo: Sophia University. OCLC 001291275
   Zöllner, Reinhard. (2003). Japanische Zeitrechnung: ein Handbuch Munich: Iudicium Verlag. ;  OCLC 249297777
  
  Other websites
   National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection
  
  Japanese eras