Same thing happens on OS X. A bit of googling (did you know that Jimi Hendrix
and the Band of Gypsies played at the Fillmore East on December 31, 1969?)
reveals that the root issue is that mktime() returns -1 if the calendar time
cannot be represented, which makes the case where the time _can_ b
A user here noticed the following difference between Linux and Windows versions
of R-2.15.3 (and R-3.0.0, I think) when using times within a second of the end
of 1969:
f <- function (sec = -1)
{
x1 <- as.POSIXct(c(2 * sec, sec, 0), origin = "1970-01-01", tz = "UTC")
x2 <- as.POSIXlt(x1)
