How to reformat dates without NA's

Question

I have a column of dates I need to reformat, they are in the format m/d/yyyy, but as the dates grow the format becomes mm/dd/yyyy. When I try to run

as.Date(x, format = '%m/%d/%y')

I get NA's

How can I reformat the dates to mm/dd/yyyy?

Answer 1

Here is an example:

# convert date info in format 'mm/dd/yyyy'
  strDates <- c("01/05/1965", "08/16/1975")
  
  strDates

Output:

[1] "01/05/1965" "08/16/1975"

Convert the dates using this code:

dates <- as.Date(strDates, "%m/%d/%Y")

Output:

[1] "1965-01-05" "1975-08-16"