lubridate
packagelubridate
package
new_period(...)
new_interval(...)
new_duration(...)
new_difftime(...)
eseconds(x = 1)
eminutes(x = 1)
ehours(x = 1)
edays(x = 1)
eweeks(x = 1)
eyears(x = 1)
emilliseconds(x = 1)
emicroseconds(x = 1)
enanoseconds(x = 1)
epicoseconds(x = 1)