Possibly a localization issue: 'jan'(uari/uary) is the same, but 'mar'ch and 'maa'rt are different. As such, the bot only works in

jan[uari|uary]
feb[ruari|ruary]
apr[il]
jun[i|e]
jul[i|y]
aug[ustus|ust]
sep[tember]
nov[ember]
dec[ember]

and not in mar/may/oct.

Version: unspecified
Severity: normal