https://bugzilla.wikimedia.org/show_bug.cgi?id=48907
Web browser: ---
Bug ID: 48907
Summary: Wikimedia is wrong on day of week for dates starting
before 1600
Product: MediaWiki
Version: 1.22-git
Hardware: All
OS: All
Status: NEW
Severity: minor
Priority: Unprioritized
Component: Parser
Assignee: [email protected]
Reporter: [email protected]
Classification: Unclassified
Mobile Platform: ---
Not sure if this is a wikimedia error or a PHP error. The day of week for
1/1/1600 is correct as Saturday. The day of week for 1-1-1599 is incorrect as
Friday.
Place the following in any wikipedia page:
Today: 2013-05-28 is {{#time:l|2013-05-28}},
, 2013 is {{#time:l|2013-01-01}}
, 1901 is {{#time:l|1901-01-01}}
, 1900 is {{#time:l|1900-01-01}}
, 1601 is {{#time:l|1601-01-01}}
, 1600 is {{#time:l|1600-01-01}}.<br>
Year 1599 is {{#time:l|1599-01-01}}
, 1598 is {{#time:l|1598-01-01}}
, 1597 is {{#time:l|1597-01-01}}
, 1596 is {{#time:l|1596-01-01}}
, 1595 is {{#time:l|1595-01-01}}
, 1594 is {{#time:l|1594-01-01}}
, 1593 is {{#time:l|1593-01-01}}.<br/>
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This returns:
Today: 2013-05-28 is Tuesday, , 2013 is Tuesday , 1901 is Tuesday , 1900 is
Monday , 1601 is Monday , 1600 is Saturday.
Year 1599 is Saturday , 1598 is Friday , 1597 is Thursday , 1596 is Tuesday ,
1595 is Monday , 1594 is Sunday , 1593 is Saturday.
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This is correct for today, 2013, 1901 and 1900.
This is correct for 1600 and 1601. This is incorrect for 1599 and I'm not sure
how far back. 1599 started on a Friday, 1598 on a Thursday, 1597 on Wednesday,
1596 on Monday, 1595 on Sunday, etc. Oh, and it's not Julian/Gregorian error,
these are Gregorian days.
I did this on an old automatically erased test template, the old revision of
which can be viewed here:
http://en.wikipedia.org/w/index.php?title=Template:X8&oldid=557212409
Wikimedia version is 1.22 wmf 4, as running on en.wikipedia.org as of today,
5/28/13.
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