In the case of Ink Pen, I would settle for fixing the “day of the week” problem, and ignore the “month of the year” issue. The next time the re-run archive cycles, it will break again, anyway.
Just another reason that GoComics thoughtlessly rerunning the strips with a four-day offset is really, really stupid (especially since it would be perfectly simple to fix).
This strip is a re-sized, re-colored, and post-dated re-run of a strip that originally appeared in July 2016: https://www.gocomics.com/darksideofthehorse/2016/07/06
In the case of Ink Pen, I would settle for fixing the “day of the week” problem, and ignore the “month of the year” issue. The next time the re-run archive cycles, it will break again, anyway.