THE YEAR-WEEK-DAY SYSTEM
The dating and updating of the TRINPsite documents is done on the
basis of a novel Year-Week-Day system, which is actually a
'Year-Week-Fixed Week Day' system. In this timekeeping
system each day is represented by the following type of code
consisting of three numbers: 12.34.5.
Such a Y.W.D. code is shorter than those used in
the traditional day-month-year and month-day-year systems, which
need 4 instead of 3 digits to record the day of the year.
While it is neither shorter nor longer than an alternative
year-day system in which the days would be numbered from 1
to 366, it has, as will become clear, the great advantage of directly
relating the day of the year not only to the week of the year but,
more importantly, to the day of the week as well.
No other system of notation makes sense than one in which a
larger unit consistently precedes a smaller unit in the way
in which thousands come before hundreds and hundreds, in
turn, before tens. Therefore, the first number in the Y.W.D.
code refers to the largest unit of time used here, that is
This year number is not based on any religious ethnically, territorially or
Instead it is based on an event which is of international significance and
recognized as real by all regardless of religious, nonreligious or
Such an event is the end of the Second World War and provisionally
—not ultimately!— year 1 is taken to be the first calendar
year after the end of that global war.
This site was started in the year 50 aSWW, that is, in the 50th (ordinal)
year after the end of the Second World
The second number in the Y.W.D. code refers to the week of the
year, and the third number to the day of the week, both in accordance
with the Quaternary Metric World Calendar. This is a perpetual
calendar in that the years are uniform in the correspondence of days
of the week and dates. Moreover, it is transparently perpetual
in that the day of the week is part of the date, and therefore
immediately visible, at least when using the Year-Week-Day code. It
is also possible to use a Year-Month-Day code in combination with the
Metric Calendar, since each four-week period covers one month of
exactly 28 days, with the exception of Central Month in the middle of
the year and, once every four years, the last month of the year, which
last 29 days.
For practical purposes, however, the use of weeks rather than months is to
be preferred. Thus, the number of weeks (52) can be divided by 2 and 4
equal parts of the year, whereas the number of months is 13, a prime
Furthermore, the Year-Month-Day code is one digit or character longer, if
using the number of the month (01-13), and even two characters longer, if
using the abbreviation for its name, such as ENE for the first
month, called "Early Northeast" in
It will be immediately clear in which month the date falls, but for the 8th
to the 28th day of the month the day of the week is not as transparent as
in the Y.W.D. code,
fixed and still easy to find by subtracting 7, 14 or 21 days.
In the document
Go Global, Go Metric! you can see
today's date both in the practical Y.W.D. and in the more formal Y.M.D.
The Quaternary Metric Calendar was introduced in
section 5.2.1 of the Book of
Symbols of the
Model of Neutral-Inclusivity
in the 41st year aSWW.
The Model (and the
picture at the bottom of this page) uses typically
neutralistic names for the Metric months, such as Northern and
Southern Equinoctial Month.
TRINPsite offers a
Metric diary for every year and everyone on Earth
which lets you choose between the
names and the nondenominational compass names.
In this text we will use the latter, universal names.
(For more about this question of nomenclature see the document entitled
the end of A Quaternary
Metric Calendar it is explained what defines the true and inclusive
That year and the inauguration of the succeeding new era is still an event
to be looked forward to.
a global calendar worldwide
ethnically and otherwise inclusive
as metric and modern as the meter
as natural and ancient as nature
and transparently perpetual
Any calendar which takes both the length of a solar year and the length of
a day into account will be inaccurate to some degree, because there are not
a whole number of days, but 365.24 of them in a year.
A regular year is therefore 0.07% shorter than the average; a leap year
0.21% longer than the average (and 0.27% longer than a regular year).
Yet, as far as months and quarters are concerned, calendars can diverge
widely in accuracy.
Since the months of the Metric World Calendar are always 28 days long,
with one exception in regular years and two exceptions in leap years, this
calendar is the most accurate, or least inaccurate, of solar calendars.
For those interested in working days it should be added that the number of
these days is also the same in every month and quarter.
The new calendar is certainly much more accurate than such a freak of
culture as the one which is currently most frequently used by state
and their fellow travelers
The following table should illustrate this:
|| 0.1% (0.2%)
|| 0.1% (0.2% in leap years)|
|| 1.4% (0.8% in leap years)|
|| 8.0% (4.7% in leap years)
(Only pseudoscientists and irreliable 'experts' with scales not yet fallen
from their eyes will employ a calendar with an inaccuracy of up to 8% to
compare the statistics of the one month or quarter with those of the next
month or quarter, while pointing at differences of a few percentage points,
or even decimals, in their data.)
Conversion between the new Metric Calendar and an old calendar such as the
religious-imperial one is not a matter of exact one-to-one correspondence
as in the case of the conversion between, for example, metric liters and
imperial gallons. Thus, a religious-imperial leap year with 29 days in the
second month or an ASWW leap year with 29 days in the thirteenth and last
month will affect this correspondence, especially if these leap years are
not made to coincide with each other. (They never coincide if leap years
must be divisible by 4, but this is a requirement that need not be insisted
upon for ASWW years, as the use of these years is provisional.)
Moreover, the first day of the Metric Calendar will only be '22 December'
on the religious-imperial calendar if that is indeed the first day of
which noon coincides with or follows the Northern winter solstice;
otherwise the Metric New Year's day will fall earlier or later on that
Nevertheless, the variation is not going to be more than one, or perhaps
sometimes two days, and for the time being the following conversion table
will be used for the week and day numbers:
|METRIC WORLD CALENDAR
(always 4 weeks, normally 28 days)
| 22-28 December
| 19-25 January
| 16-22 February
March (-29 Feb*)
9-15 March (8-14)
| 16-22 March
30 Mar-5 Apr
(29 Mar-4 Apr)
| 13-19 April (12-18)
27 Apr-3 May
(26 Apr-2 May)
4-10 May (3-9)
| 11-17 May (10-16)
25-31 May (24-30)
(31 May-6 June)
| 8-14 June (7-13)
15-22 June (14-21)
23-29 June (22-28)
30 June-6 July (29 June-5 July)
| 7-13 July (6-12)
14-20 July (13-19)
21-27 July (20-26)
28 July-3 Aug
(27 July-2 Aug)
| 4-10 August (3-9)
25-31 August (24-30)
| 1-7 September (31 Aug-6 Sept)
8-14 Sept (7-13)
15-21 Sept (14-20)
| 29 Sept-5 Oct (28 Sept-4 Oct)
6-12 October (5-11)
13-19 Oct (12-18)
20-26 Oct (19-25)
| 27 Oct-2 Nov
(26 Oct-1 Nov)
17-23 Nov (16-22)
(29 days in leap years)
| 24-30 Nov (23-29)
December (30 Nov-6 Dec)
15-21 December (14 Dec-*)
(* dates between parentheses pertain to leap
In the above system every year has an extra day at the end of the first
half, while only leap years have a (second) extra day at the end of the
In this way the intercalary extra day in a leap year does not affect the
regular succession of days, of which the eight-day 26th week has become an
integral and fixed part.
In this way, too, the fixed extra day is now exactly in the middle of the
year in Central Month, so that at least in standard years the balance
between Northern and Southern months is fully maintained.
This is what both
catenical neutrality and planetary