On Mar 1, 2012, at 2:02 PM, Ben quant wrote:
> Hello,
>
> How do I get the dates of all Fridays between two dates?
>
> thanks,
>
> Ben
Days <- seq(from = as.Date("2012-03-01"),
to = as.Date("2012-07-31"),
by = "day")
> str(Days)
Date[1:153], format: "2012-03-01" "2012-03-02" "2012-03-03" "2012-03-04" ...
# See ?weekdays
> Days[weekdays(Days) == "Friday"]
[1] "2012-03-02" "2012-03-09" "2012-03-16" "2012-03-23" "2012-03-30"
[6] "2012-04-06" "2012-04-13" "2012-04-20" "2012-04-27" "2012-05-04"
[11] "2012-05-11" "2012-05-18" "2012-05-25" "2012-06-01" "2012-06-08"
[16] "2012-06-15" "2012-06-22" "2012-06-29" "2012-07-06" "2012-07-13"
[21] "2012-07-20" "2012-07-27"
HTH,
Marc Schwartz
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