The D'ni timekeeping system is very different than the system used on Earth'ssurface. Below is an explanation of some of the major differences and terms.

• The D'ni's largest amount of time is an "hahr". The "hahr" is roughly equivalent to one Earth year.
• The D'ni "hahr" is divided into 10 equal segments called "vai-lee-tee". One "vai-lee" is roughly equivalent to one Earth month.
• A "vai-lee" is further divided into 29 "yahr-tee". One "yahr" is equal to about 30 hours and 14 minutes of surface time. (1.26 Earth days) There are 290 "yahr-tee" in one "hahr."
• "Yahr-tee" are further divided into 5 equal segments called "gahr-tah-vo-tee". One "gahr-tah-vo" is equal to about 6 hours and 3 minutes of surface time.
• "Gahr-tah-vo-tee" can be further divided into 25 equal segments called "tah-vo-tee". One "tah-vo" is equal to about 14.5 minutes of surface time.
• "Tah-vo-tee" are further divided into 25 equal segments called "gor-ahn-tee". One "gor-ahn" is equal to about 36 seconds of surface time.
• "Gor-ahn-tee" are further divided into 25 equal segments called "pro-rahn-tee". One "pro-rahn" is equal to about 1.5 seconds of surface time.