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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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None
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Affects Version/s: 2.1.1
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Component/s: JavaScript
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None
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Environment:OS X 64bit server with local timezone anything other than UTC
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ALL
If you use the Date.getDate() function (returns day of month, 1-indexed) in server-side javascript, it seems that timezone conversion into the server's timezone is taking place (here with server in US/Eastern timezone):
> db.eval("function(){ return new ISODate('2012-05-07T00:00:00Z').getDate(); }") 6 > db.eval("function(){ return new ISODate('2012-05-07T12:00:00Z').getDate(); }") 7 > db.eval("function(){ return new ISODate('2012-05-07T23:00:00Z').getDate(); }") 7
Note that the local shell has the same behavior:
> new ISODate('2012-05-07T00:00:00Z').getDate() 6 > new ISODate('2012-05-07T12:00:00Z').getDate() 7 > new ISODate('2012-05-07T23:00:00Z').getDate() 7
I can't tell whether I think the shell ought to do this conversion or not. The server certainly shouldn't.