In order to be able to fulfil the need to situate cultural products such as the documents of this site in time some kind of chronological system is required. On this planet the Earthly solar year is best suited as a unit for a more or less natural chronology. Such a chronology must, then, establish two things:

1. the number of or code for the year
   For want of something better, so long as the Inclusive Era has not started yet, this site counts the number of years which have begun after (the first solstice succeeding) the end of the Second World War. (Hence, the year number equals an ordinal number: 1 for the first year, 2 for the second, and so on. There is no year 0.)
2. the number of or code (and name) for the day of the year
   For this purpose the present site uses the one-cycle Quaternary Metric World Calendar instead of a historically deformed freak of culture such as the up to now most frequently used Gregorian Christian one, a product of the religious-imperial mind. (The Metric Calendar makes use of only one cycle: the solar year, of which the weeks form integral parts. The Gregorian Calendar is based on the year cycle and an entirely unrelated week cycle.)

The following ebook, diary, webpages and card deal specifically with the new era and the Metric Calendar, except for one that is about the old, Christianist era developed by Exiguus:

• The Metric Calendar, a Metric Diary (an ebook) together with a Metric diary on paper (a POD paperback)
• Automatic conversion from Gregorian to Metric
• The Beginning of a New Home and Dating System
• Exiguus' Era
• A perpetual New Year card in:
  • This Language only
  • Zhezhong Yuyan and This Language
  • Deze Taal

TRINPsite offers you:

• in the Book of Symbols
• for every year and everyone on Earth
  (free from days specially marked for supernaturalists and exclusivists)

All MVVM documents show two dates, separated by a hyphen, after the site name MVVM at the top on the left. The first of these dates is the day on which the document was made public on the Internet, the second the day when the document was last changed, at least as far as the visible text is concerned. The dates are represented by codes consisting of three numbers: 12.34.5. The first number relates to the year, starting from the end of the Second World War; the second and third numbers relate to the week and the day of the week in accordance with the Metric World Calendar.

In languages which are in at least one respect much more logical or consistent than the traditional variant of This Language every month of the year is given a numerical name (Month One or First Month, Month Two or Second Month, and so on), regardless of the calendar used. Such a name may also be used for a month of the Metric World Calendar, but it does not distinguish a Metric month from one of the months of the usually freakish, if not exclusivist, calendars in use at the same place or elsewhere, at the same time or in the past. (Moreover, a name like First Month may be confused with the first month of a series of months not starting with 'First Month', dependent on other characteristics of the language in question.) Therefore, it is very worthwhile to have alternative names for the months which apply to the Metric World Calendar only. Such names have already been created for Zhezhong Yuyan. Since the morphemes Yule and Lent do not exist in that language (or would change the meaning of the morpheme for Spring), they have been replaced with East and West in what will be called "the compass names" of the Metric months in This Language.

(Theoretically, it would also have been possible to use the order from Northeast and Northwest via Central Month to Southwest and Southeast, or from Northwest and Northeast via Central Month to Southeast and Southwest. But, like the equator, there is nothing exclusively Western or exclusively Eastern about Central Month and therefore it has not been made part of some 'Western' or 'Eastern' period of the year.)

As from the end of the 62nd year aSWW the literal translations of the typically Metric names in Zhezhong Yuyan are also used in This Language for universal, nondenominational purposes. The names with Yule, Equinoctial and Lent as introduced in the will continue to be used in more formal, if not solemn, circumstances. The correspondence between the compass names and specifically neutralistic Model names and abbreviations is as follows:

The Northern semester covers weeks 1 to 24, the Southern one weeks 29 to 52. These semesters do not include any of the four central weeks, because Central or 'Equatorial' Month itself is neither a Northern nor a Southern month. The Northern half year, however, covers weeks 1 to 26, and the Southern half year weeks 27 to 52. These half years are both 26 weeks long.

The Northeast trimester covers weeks 1 to 12; this period is the same as 'Northern Yule'. The Northeast quarter, however, covers weeks 1-13, as all four quarters are exactly 13 weeks long. The Northwest trimester covers weeks 13 to 24; this period is the same as 'Northern Lent'. The Northwest quarter covers weeks 14-26. The Southeast trimester covers weeks 29 to 40; this period is the same as 'Southern Yule'. The Southeast quarter covers weeks 27-39. The Southwest trimester covers weeks 41 to 52; this period is the same as 'Southern Lent'. The Southwest quarter covers weeks 40-52.