Bioequivalence and Bioavailability Forum

Hi all,

can someone try this:

Date.str=paste0("01/", month.abb[c(1:12)], "/2024")
Date.I=as.Date(Date.str,format='%d/%b/%Y')
print(data.frame(Date.str, Date.I))

The code creates some dates as string for first day of all months and then tries to interpret the strings as dates. I am getting an NA for September.

Oddly, if I abbreviate September as "Sept" rather then "Sep"
as.Date("01/Sept/2024",format='%d/%b/%Y')

then it works, in spite of the fact that month.abb[9] is Sep and not Sept on my system.

Does it behave the same way on your system? Mine is Win11 installed last week along with a fresh R install.

Add.: Oh dear, is %b locale-dependent? Shoot me, please. Put me out of my misery. This is not good.