"Similar to Earth, then," Hannibal noted. He noted that pause and said, all too casually, "My sister's final birthday was quite the production."

Then he shrugged. "Months in the predominant calendar are of varying length. November is thirty days; today is October 31st, and December will also have thirty-one. There are mnemonics to remember it, but if you're still learning the names of the months, the easiest thing to do will be to purchase a calendar."