Keep track of time and date with the method used by the ancient D'ni! This lovely polar clock keeps you on time with the cavern's algal cycle, as well as the units of time used by the D'ni.

• The hahr is roughly equivalent to one Earth year.
• One vailee is roughly equivalent to one Earth month.
• One yahr is equal to about 30 hours and 14 minutes of surface time
• One gahrtahvo is equal to about 6 hours and 3 minutes of surface time.
• One pahrtahvo is equal to about 1 hour 13 minutes of surface time.
• One tahvo is equal to about 14.5 minutes of surface time.
• One gorahn is equal to about 35 seconds of surface time.
• One prorahn is equal to about 1.5 seconds of surface time.

Based on the methods explained by RAWA and described in Myst Online. Thanks to RIUM+ for his help interpreting D'ni horology. Designed by Ellen Rockett and developed by Dane Wallinga.

• Cyan, but you already knew that
• The Myst community on Google+
• The Guild of Archivists' page about timekeeping
• Jehon's old JavaScript D'ni clock