Hi, > Actually, I think that the 10-argument form of Time.local/mktime is deprecated. > You should really be using the 1-to-8 argument forms, which have no wday or > yday fields at all: > > Time.mktime(year[, month[, day[, hour[, min[, sec[, msec[, zone]]]]]]]) The reason why I was trying to do it the way I was doing it was because the data I was looking at had the day of the year and not the day of the month. I really would be using this if I had the day of the month readily available---the question wouldn't even have come up in the first place if it weren't for that. I've used the `date' library together with Time as a workaround, but it's not the way I would prefer to do it. R