The POSIXct/lt functions do this (provided your OS is up to it).
x <- c("2007-03-01 12:00:00", "2007-03-15 12:00:00",
"2007-04-01 12:00:00")
xx <- as.POSIXct(x, tz="EST5EDT")
format(xx, tz="Europe/London")
[1] "2007-03-01 17:00:00" "2007-03-15 16:00:00" "2007-04-01 17:00:00"
format(xx, "%Y-%m-%d %H:%M:%S %Z", tz="Europe/London")
[1] "2007-03-01 17:00:00 GMT" "2007-03-15 16:00:00 GMT"
[3] "2007-04-01 17:00:00 BST"
That's Linux, but R 2.7.0 under Windows can do this too (except it labels
time zones by Windows' names in the last case).
On Mon, 28 Apr 2008, McGehee, Robert wrote:
Hello,
I'm trying to convert times in the EST/EDT (New York) format to times in
the GMT/BST (London) and UTC+9 format (Tokyo). That is, if I know what
time it is in New York, what is local time in London and Tokyo?
Ex:
Here's the conversion from New York EST/EDT time to London's GMT/BST
time zone for three days in 2007. Note that the US and London change to
daylight savings on different days (Tokyo doesn't use daylight savings
at all), so this conversion is non-trivial.
2007-03-01 12:00:00 EST = 2007-03-01 17:00:00 GMT
2007-03-15 12:00:00 EDT = 2007-03-01 16:00:00 GMT
2007-04-01 12:00:00 EDT = 2007-03-01 17:00:00 BST
Don't think so .....
Is any of the time zone/daylight savings information coded up somewhere?
Thanks,
Robert
Robert McGehee, CFA
Geode Capital Management, LLC
One Post Office Square, 28th Floor | Boston, MA | 02109
Tel: 617/392-8396 Fax:617/476-6389
mailto:[EMAIL PROTECTED]
This e-mail, and any attachments hereto, are intended fo...{{dropped:11}}
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