Determine the Weekday on a Specific Date in R Programming - weekdays() Function

Last Updated : 15 Jul, 2025
weekdays() function in R Language is used to determine the weekday on a specific date passed to it as argument.
Syntax: weekdays(date, abbreviate) Parameters: date: Date to be checked abbreviate: Boolean value to abbreviate weekday
Example 1: Python3 1== 
# R program to find the weekday 
# on a specific date

# Specifying the date
date <- as.POSIXlt("2020-06-23")
date

# Calling weekdays() function
weekdays(date)
Output: 
[1] "2020-06-23 UTC"
[1] "Tuesday"
Example 2: Python3 1== 
# R program to find the weekday 
# on a specific date

# Specifying the date
date <- as.POSIXlt("1994-06-17")
date

# Calling weekdays() function
weekdays(date, abbreviate = TRUE)
Output: 
[1] "1994-06-17 UTC"
[1] "Fri"
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Article Tags:
R Language
R Date-Function

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