Unrelated to other Stardate systems, Reference Stardates were based on the Earth calendar and could be calculated retroactively. Using the Earth year 2000 as a baseline, Reference Stardates marked centuries ahead of a forward slash, followed by two digits for the year, two for the month, a decimal, and the date (e.g. Reference Stardate 1/5104.16 for 16 April 2151, or -1/6609.08 for 8 September 1966).
In 2262, a new stardate system was introduced. This married the previous system with the Reference Stardate system by having 1000 stardates be equivalent to one Earth year, but remained otherwise independent from the Earth calendar. Each stardate was approximately 8 hours, 45 minutes long, and is subdivided by a decimal; the number of digits following the decimal point could be used to calculate the precise time with great detail.
Notes and References
- Roddenberry, Gene (Executive Producer). Star Trek, Season 1. Desilu Productions, 1966-1967.
- Roddenberry, Gene (Executive Producer). Star Trek, Season 2. Desilu Productions, 1967-1968.
- Roddenberry, Gene (Executive Producer) and Freiberger, Fred (Producer). Star Trek, Season 3.Paramount Pictures Corporation, 1968-1969.
- Scheimer, Lou & Prescott, Norm (Producers). Star Trek: The Animated Series, Season 1. Filmation Associates, 1973-1974.
- Scheimer, Lou & Prescott, Norm (Producers). Star Trek: The Animated Series, Season 2. Filmation Associates, 1974.
- Wheeler, Wm. John with McLimore, Guy W. Jr., Poehlein, Greg K., and Tepool, David F. "Cadet's Orientation Sourcebook." Star Trek: The Role Playing Game, Book 2004A. FASA Corporation, 1983.
- The Reference Stardate system introduced in FASA's Star Trek: The Roleplaying Game was an early effort to reconcile stardates with Earth calendar dates. The dates given were all based upon the Star Trek: Spaceflight Chronology.
- Roddenberry, Gene (Executive Producer) & Berman, Rick & Hurley, Maurice (Co-Executive Producers). Star Trek: The Next Generation, Season 1. Paramount Pictures Corporation, 1987-1988.