R Error in charToDate(x) : character string is not in a standard unambiguous format (2 Examples)

In this R tutorial you’ll learn how to fix the “Error in charToDate(x) : character string is not in a standard unambiguous format”.

Example 1: Replicating the Error Message in charToDate(x) : character string is not in a standard unambiguous format

as.Date("25 Jan 2025")        # as.Date function doesn't work
# Error in charToDate(x) : 
#   character string is not in a standard unambiguous format

Example 2: Solving the Error Message in charToDate(x) : character string is not in a standard unambiguous format

install.packages("anytime")   # Install & load anytime package
library("anytime")

anydate("25 Jan 2025")        # anydate function works fine
# [1] "2025-01-25"

Related Articles

Below, you may find some further resources on topics such as coding errors and character strings.

• Error Handling – Backslash Used without Hex Digits in Character String
• Error in as.POSIXlt.character : string not standard unambiguous format