int <- interval(ymd("2001-01-01"), ymd("2002-01-01"))
# 2001-01-01 UTC--2002-01-01 UTC
int_end(int)
# "2002-01-01 UTC"
int_end(int) <- ymd("2002-06-01")
int
# 2001-01-01 UTC--2002-06-01 UTC
Run the code above in your browser using DataCamp Workspace