Editing Kryptonian (section)

==Calendar==
In the 1970s and 1980s, details about the Kryptonian calendar as it existed in the [[Earth-One#Pre-Crisis version|Earth-One]] universe were revealed. The Kryptonian time units were defined as follows:<ref>''Krypton Chronicles'' #1-3 (Sept.-Nov. 1981) and elsewhere</ref>

* 100 thribo (Kryptonian seconds) per dendar (Kryptonian minute).
* 100 dendaro (Kryptonian minutes) per wolu (Kryptonian hour).
* 10 woluo (Kryptonian hours) per zetyar (Kryptonian day).
* six zetyaro (Kryptonian days) per fanff (Kryptonian week).
* 73 zetyaro (Kryptonian days) per lorax (Kryptonian month).
* 438 zetyaro (Kryptonian days) per amzet (Kryptonian year).
* 73 fanffo (Kryptonian weeks) per amzet (Kryptonian year).
* six loraxo (Kryptonian months) per amzet (Kryptonian year).
* The six loraxo (months) were: Belyuth, Ogtal, Ullhah, Eorx, Hefralt and Norzec.<ref>Letters page of ''Superman'' #254 (July 1972)</ref>

In the Kryptonian language, the suffix "o" indicates the plural form of a noun.

According to one story, in which [[Quex-Ul#Pre-Crisis|Quex-Ul]] had served his full sentence, 18 Kryptonian sun-cycles (amzeto) is about 25 Earth years.<ref>''Superman'' #157 (Nov. 1962)</ref> It can be demonstrated that one Kryptonian sun-cycle is 1.37 Earth years, as follows:

* [[Superman (Earth-One)|Superman]] was born on 35 Eorx 9998,<ref>''Action Comics'' #429 (Nov. 1973), ''World Of Krypton'' #2 (Aug. 1979) and elsewhere</ref> which occurred on February 29<ref>''World's Finest Comics'' #235 (Jan. 1976), ''Superman Annual'' #11 (1985) and elsewhere</ref> in the Earth calendar.
* [[Krypton (comics)#Silver Age Krypton|Krypton]] exploded early on 39 Ogtal 10000,<ref>''World Of Krypton'' #3 (Sept. 1979) and elsewhere</ref><ref>''Superman's Pal Jimmy Olsen'' #98 (Dec 1966)</ref> which occurred on June 16 in the Earth calendar (Superman arrived on Earth two days later, on June 18).<ref>The "1976 Super DC Calendar" and elsewhere</ref><ref>''Superman'' #263 (April 1973), ''World's Finest Comics'' #235 (Jan. 1976) and elsewhere</ref>
* Therefore, there were 734 Kryptonian days (1.676 Kryptonian years) between the two events.
* Since 18 Kryptonian years is about 25 Earth years, then there were approximately 2.3 Earth years between the two events.
* The exact number of days between February 29, and June 16 two years later, is 838 (or 2.294 years).
* Thus, 1.676 Kryptonian years equals 2.294 Earth years, or 1 Kryptonian year equals roughly 1.37 Earth years.

Using this ratio of 1.37 Earth years per Kryptonian year (amzet), and ignoring any potential Kryptonian leap day and any differences in time of day, one can approximate other units of time:

* 1.37 years per amzet
* 0.99 seconds per thrib (31,556,952 seconds/year * 1.37 years/amzet * one amzet/43,800,000 thrib)
* 1.65 minutes per dendar (525949.2 minutes/year * 1.37 years/amzet * one amzet/438,000 dendar)
* 2.74 hours per wolu (8765.82 hours/year * 1.37 years/amzet * one amzet/4,380 wolu)
* 1.14 days per zetyar (365.2425 days/year * 1.37 years/amzet * one amzet/438 zetyar)

Major events in the Kryptonian calendar include:<ref>''World Of Krypton'' #1-3 (July-Sept. 1979) and elsewhere</ref>
* [[Jor-El]] and [[Lara (character)|Lara]] were married on 47 Ullhah 9997.
* The city of [[Kandor (comics)|Kandor]] was stolen by [[Brainiac (character)|Brainiac]] on 33 Ogtal 9998.
* Kal-El (Superman) was born to Jor-El and Lara on 35 Eorx 9998.
* The [[Phantom Zone#Pre-Crisis|Phantom Zone]] became an official method of punishment, and [[Jax-Ur]] became its first prisoner, on 67 Eorx 9999.
* Kal-El's pet dog, [[Krypto]], was lost in space on 54 Belyuth 10000.
* Jor-El launched the Phantom Zone projector into space on 30 Ogtal 10000.
* [[Lar Gand]] landed on Krypton and met Jor-El on 34 Ogtal 10000.
* Kal-El was sent in an interstellar rocketship towards Earth and Krypton exploded on 39 Ogtal 10000.