How can I create a vector containing the days of the week?

I need a vector containing the days of the week very often, but I always type it out:

days.of.week <- c("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday")

This is pretty easy because it's short, but there's always the possibility of typos. Is there a way to create a vector containing the days of the week programmatically?