The Universe of Honor Harrington (mth-4) by David Weber

Author:David Weber [Weber, David]
Language: eng
Format: epub
Tags: sf_space

(B) Manticoran Time-Keeping:

All of the above dates are given in Terran Standard (Post Diaspora) Reckoning. Like all extra-Solar systems settled during the Diaspora of Man, the Manticore System found it necessary to create its own calendar to reflect the axial and orbital rotations of their new home, but in the Manticorans' case the situation was complicated by the fact that whereas most star systems are fortunate to have a single habitable world, their distant binary system possessed three of them, each with its own day and year.

As the rest of humanity, Manticorans use Standard Seconds, Minutes, and Hours, and Old Earth's 365.26-day year serves as the "Standard Reckoning Year," or "T-year," the common base to which local dates throughout known space are converted for convenience in dealing with inhabitants of other star systems. Like most extra-Solar polities, the Star Kingdom of Manticore's history texts follow the convention of counting years "Post Diaspora" (ie., in T-years from the year in which the first interstellar colony ship departed Old Earth) as well as in terms of the local calendar.

The Kingdom's Official Reckoning of dates is based on the rotational and orbital periods of Manticore-A III, the planet Manticore. This calendar is used for all official records, but doesn't really work very well for the seasons of any planet other than Manticore itself. Accordingly, both Sphinx (Manticore-A IV) and Gryphon (Manticore-B IV) have their own, purely local calendars, which means that a single star system routinely uses no less than four calendars (including Standard Reckoning). Needless to say, date-conversion software is incorporated in virtually every Manticoran computer.

The Kingdom's planetary days and years are:

The clocks of each planet count time in full 60-minute Standard Hours (or T-hours), with an additional, shorter "hour" called "Compensate" (or, more commonly, simply "Comp") to make up the difference. Thus the Planet Manticore's day consists of 22 hours (numbered 01:00 to 22:59) plus a 27-minute-long Comp, while Sphinx's day consists of 25 hours (numbered 01:00 to 25:59) plus a 37-minute Comp. The planetary week is seven planetary days long in each case, and Manticore's day is used aboard all Royal Navy vessels.

The official year of the Kingdom is 673 days long, with a leap year every third year. It is divided into 18 months, 11 of 37 days and 7 of 38, alternating for the first 6 and last 8 months, named (simply, if rather unimaginatively) First Month, Second Month, Third Month, etc., with a leap year (1 extra day in 4th Month) every third year. The Gryphon local year is also divided into 18 months (16 of 36 days and 2 of 37 days) with the extra days in Ninth and Tenth and one extra day in Eleventh Month every other local year. The Sphinxian year, however, is divided into 46 months, 35 of 39 days and 11 of 38 days (the shorter months fall in even-numbered months from Twelfth to Thirty-Second), with a leap year every 7 years with an extra day in 15th Month. All of

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