This page allows you to convert dates of Gregorian Calendar into Gan Zhi Calendar (Stem and Branch Calendar / Four Pillars / Eight Characters). Simply enter a date in boxes below and press the "Calculate" button to show that date in Gan Zhi Calendar. This Java applet is used for studying Gan Zhi Calendar, and is NOT APPLICABLE to Four-pillars astrology and Selecting Date astrology. If you use this applet for Four-pillars astrology or Selecting Date astrology, use at your own risk. This calculation is based on the meridian at longitude 120°  East.

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