I would like all three of these calculations to give an answer in days (or at
least the same units):
> as.POSIXct("1971-08-01 00:00:00") - as.POSIXct("1971-08-01 00:00:00")
Time difference of 0 secs
>
> as.POSIXct("1971-08-01 12:00:00") - as.POSIXct("1971-08-01 00:00:00")
Time difference of 12 hours
>
> as.POSIXct("1971-09-01 00:00:00") - as.POSIXct("1971-08-01 00:00:00")
Time difference of 31 days
>
What is the best way to do this?
Tom
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