20 Ahn equals 1 Day
40 Ehn equals 1 Ahn
80 Ihn equals 1 Ehn
A Gorean Day is 20 Ahn (hours) in length
Noon is the 10th Ahn, Midnight is the 20th Ahn
"The shadows of the pasang stones had grown long, and, judging by the angle of these shadows (for the stones are set in such a way as to serve also as sundials) It was past the fourteenth Gorean Ahn, or hour. The Gorean Day is divided into twenty Ahn, which are numbered consecutively. The tenth Ahn is noon, the twentieth, midnight. Each Ahn consists of 40 Ehn, or minutes, and each Ehn of eighty Ihn, or seconds."
~Outlaw of Gor, page 26~
"The Gorean day consists of twenty Ahn; the Gorean Ahn, or hour, of forty Ehn, or minutes; the Ehn consists of eighty Ihn, or seconds. An Ihn is slightly less than an Earth second."
~Tribesmen of Gor, page 352~
"Chronology, incidentally, is the despair of scholars on Gor, for each city keeps track of time by virtue of its own Administrator Lists."
~Outlaw of Gor, page 178~
"...the Wagon Peoples calculate the year from the Season of Snows to the Season of Snows; Turians, incidentally, figure the year from summer solstice to summer solstice; Goreans generally, on the other hand, figure the year from vernal equinox to vernal equinox, their new year beginning, like nature's, with the spring; the Omen Year, or season, lasts several months, and consists of three phases, called the Passing of Turia, which takes place in the fall; the Wintering, which takes place north of Turia and commonly south of the Cartius, the equator of course lying to the north in this hemisphere; and the Return to Turia, in the spring, or, as the Wagon Peoples say, in the Season of Little Grass. It is near Turia, in the spring, that the Omen Year is completed, when the omens are taken, usually over several days."
~Nomads of Gor, page 11~
***A little Gorean trivia***
"The working day is fifteen Gorean hours (Ahns), which, allowing for the slight difference in the period of the planet's rotation, would be approximately eighteen Earth hours."
~Outlaw of Gor, page 150~
***A little more Gorean trivia***
"All who do skilled work in the arsenal, incidentally, are free men....The average working day is ten Ahn, or about twelve Earth hours. The amount of time spent in actual work, however, is far less. The work day of a free man in the arsenal is likely to be, on the whole, a rather leisurely one. Free goreans do not like to be pressed in their tasks. Two ahn for lunch and stopping an Ahn early for paga and talk in the late afternoon are not uncommon. Layoffs occur, but, because of the amount of work, not frequently. Organizations, such as the sail-makers, almost guildlike, not casts, have dues, and these dues tend to be applied to a number of purposes, such as support of those injured or their families, loans, payments when men are out of work, and pensions. The organizations have also, upon occasion, functioned as collective bargaining agencies. "
~Raiders of Gor, pages 134 & 135~