Advantages and disadvantages of thermoluminescence dating
13-Jun-2017 09:43
The Gregorian leap cycle, which has 97 leap days spread across 400 years, contains a whole number of weeks ().
Using only the ordinal year number, the number of weeks in that year can be determined: Add 3 to the number of this weekday, giving a correction to be used for dates within this year.
Correspondence of lexicographical order and chronological order is preserved (just like with the ISO year-week-weekday numbering), but partial weeks make some computations of weekly statistics or payments inaccurate at end of December or beginning of January.