Days of the week are not recognized

[cakebaker]

GNU date recognizes days of the week and their three-letter abbreviations (plus tues, thur, and thurs), for example:

$ date --date="monday"
Mon Jun 26 12:00:00 AM CEST 2023
$ date --date="mon"
Mon Jun 26 12:00:00 AM CEST 2023
$ date --date="tuesday"
Tue Jun 20 12:00:00 AM CEST 2023
$ date --date="tue"
Tue Jun 20 12:00:00 AM CEST 2023

uutils date, using parse_datetime, doesn't recognize any days of the week and returns an "invalid date" error instead.

[philolo1]

I will tackle this.

[tertsdiepraam]

@philolo1 maybe before adding functionality we have to focus on the port to nom. If you want we can discuss with the author of that PR if you can adopt the PR.

[philolo1]

@tertsdiepraam sure, do you have a link to the pr?

[tertsdiepraam]

Here you go: #25