NRO.SEMAJNO.ISO
NRO.SEMAJNO.ISO kalkulas la numeron de la semajno en la jaro por la interna data valoro.
The International Standard ISO 8601 has decreed that Monday shall be the first day of the week. A week that lies partly in one year and partly in another is assigned a number in the year in which most of its days lie. That means that week number 1 of any year is the week that contains the January 4th.
Sintakso
NRO.SEMAJNO.ISO(numero)
Number is the internal date number.
Ekzemploj
=NRO.SEMAJNO.ISO(DATO(1995;1;1)) liveras je 52. Semajno 1 komencas je lundo, 1995-01-02.
=NRO.SEMAJNO.ISO(DATO(1999;1;1)) liveras je 53. Semajno 1 komencas je lundo, 1999-01-04.