Hi, Here i have a time along with date, for eg:- "10/5/2012 5:05:00 AM" i need to do minus 10 minutes along current date Like this :- "10/5/2012 4:55:00 AM" Thanks in Advance Antony -- View this message in context: http://r.789695.n4.nabble.com/Minute-Difference-tp4645157.html Sent from the R help mailing list archive at Nabble.com.