id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1859	Bug in _WeekNumberISO?	Tweaky	Gary	"Hi,
is it possible, that there is a bug in _WeekNumberISO?
When I run this script I get the week of 01.01. for the year

#include <Date.au3>
For $i = 2011 To 2030
    $x = _WeekNumberISO($i, 01, 01)
    ConsoleWrite($i & @TAB & $x & @CRLF)
Next

The Result is
2011 52
2012 0
2013 1
2014 1
2015 53
2016 52
2017 0
2018 1
2019 1
2020 1
2021 53
2022 52
2023 0
2024 1
2025 1
2026 53
2027 52
2028 52
2029 1
2030 1

It looks like, that the result is 0 when the 01.01 is a sunday."	Bug	closed		Standard UDFs	3.3.6.1	None	Fixed