I am using R outside the US and I got everything working in English, but the result of weekdays() is still in Spanish:
weekdays()
Day <- seq(as.Date(\"2
From my answer here, you can get weekdays in English without messing with locales like this:
c("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")[as.POSIXlt(Day)$wday + 1]