What a bizarre concept, just lopping off a few weeks.

Transcript:

Mr Bugg holds a calendar in one hand. His other hand is pressed to his forehead, and his face wears an expression of deep confusion. Mrs Bugg holds another calendar, and is shrugging.

The text reads: “Febuggary 17, 1753: In Sevedbug Febuggary 17 is followed by Bugarch 1, as they move from the Bugian Calendar to the Buggorian Calendar.”