There is an off-by-one error in Month select in Statistics selection

Here's the patch…

Thanks for the patch; I will apply it. I had copied the code from https://www.drupal.org/docs/8/core/modules/datetime/datetime-overview → , where there was the UTC/NULL combination - perhaps we should ask for the documentation there to be corrected, if it's the same use case?

I reordered and commented the code a little more in my commit. Hopefully this looks good! I will mark the issue as fixed for now, but feel free to reopen if you think I've created a new problem.

Hey @egfrith, thanks for your quick reply. I'll submit an update to the docs page and see what happens. On that page, anything in particular stands out as «misleading» ?

Thank you for posting the comment on the docs. I've now worked out how the Drupal credit system works ... it's been a long time since anyone contributed to my project :)

@bisonbleau your addition to the Datetime overview documentation → was a good one (and immediately accepted). You inspired me to elaborate further → . I hope it'll help someone at some point.