[R] Error in as.POSIXlt.character(x, tz, ...)

[Jinsong Zhao]

Hi there,

When I run the following code in R 4.3.0 on FreeBSD, I got error.

 > as.POSIXct("1970-01-01 00:00.00 UTC")
Error in as.POSIXlt.character(x, tz, ...) :
   character string is not in a standard unambiguous format

The same code could give correct answer in R 4.3.0 on Windows, and R 
4.1.2 on a old CentOS.

 > as.POSIXct("1970-01-01 00:00.00 UTC")
[1] "1970-01-01 CST"

I confirmed that all the 3 OSes give the same time zone:
 > Sys.timezone()
[1] "Asia/Shanghai"

What's wrong with the R on FreeBSD? Any hint? Thanks in advance.

Best,
Jinsong