R Language The Date class Formatting Dates


Example

To format Dates we use the format(date, format="%Y-%m-%d") function with either the POSIXct (given from as.POSIXct()) or POSIXlt (given from as.POSIXlt())

d = as.Date("2016-07-21") # Current Date Time Stamp

format(d,"%a")            # Abbreviated Weekday
## [1] "Thu"

format(d,"%A")            # Full Weekday
## [1] "Thursday"

format(d,"%b")            # Abbreviated Month
## [1] "Jul"

format(d,"%B")            # Full Month
## [1] "July"

format(d,"%m")            # 00-12 Month Format
## [1] "07"

format(d,"%d")            # 00-31 Day Format
## [1] "21"

format(d,"%e")            # 0-31 Day Format
## [1] "21"

format(d,"%y")            # 00-99 Year
## [1] "16"

format(d,"%Y")            # Year with Century
## [1] "2016"

For more, see ?strptime.