Miskatonic University PressJamie Zawinski does it in Perl: The date is now Tuesday, March 178th, 2020. Here it is in R:
$ Rscript -e 'march_date <- as.integer(Sys.Date() - as.Date("2020-02-29")); sub("XX", march_date, format(Sys.time(), "%Y-03-XX %T"))'
[1] "2020-03-178 18:50:47"