The ISO 8601:1988 week number of the current year as a decimal number, range 01 to 53, where week 1 is the first week that has at least 4 days in the current year, and with Monday as the first day of the week. See also %U and %W.
ISO 8601:1988, uneko urteko asteko eguna zenbaki hamartar gisa, 01 - 53 bitartea, 1 zenbakiko astea 4 egun dituen urteko lehenengoa da, eta astelehena da asteko lehen eguna. Ikus, halaber, %U eta %W.