The Infernian Calendar

The Infernian Calendar, also commonly called the Metric Calendar, is a calendar created and implemented by the Infernian government since it's formation. The revolutionary system was designed in part to remove all religious influences from the calendar and is part of a larger attempt at decimalisation in Infernia (which also includes decimal time of day, decimalisation of currency, and metrication).

The Metric calendar year begins the day the vernal equinox occurs over the Pandæmonium Observatory and has twelve months of 30 days each, which are given new names based on nature, principally having to do with the prevailing weather in and around Pandæmonium. The twelve months are each divided into three ten-day weeks called decimanes. The tenth day, Tenthday, replaces Sunday as the day of rest and festivity. The five or six extra days needed to approximate the solar or tropical year are placed after the months at the end of each year and called conplementary days.

Each day in the Metric Calendar is divided into ten hours, each hour into 100 decimal minutes, and each decimal minute into 100 decimal seconds. Thus an hour is 144 conventional minutes (more than twice as long as a conventional hour), a minute is 86.4 conventional seconds (44% longer than a conventional minute), and a second is 0.864 conventional seconds (13.6% shorter than a conventional second).