Well, i believe writing correct date format would have served the purpose. Suppose tfr contains Date as column and is a factor by class. tft$Date <- as.Date(as.character(tfr$Date),"%d/%m%Y") should give you the desired output. -- View this message in context: http://r.789695.n4.nabble.com/DAtes-tp4639172p4639366.html Sent from the R help mailing list archive at Nabble.com.