They begin to book an entire calendar month of flight days two months in advance.

Passes cover three to eight days' travel in any calendar month.

The tax year is a period of 12 calendar months.

The affected person must write to the Council within one calendar month of the date on the decision letter.

The charge can be somewhere between $50 to $300 per calendar month.

So when did they start playing baseball by calendar months?

"I can actually get a sentence out in a calendar month," Robert said.

Make sure the period you choose ends on the last day of a calendar month.

If a woman has already gone through menopause, she must wait three calendar months.

The Heat also set a franchise record for most wins in a calendar month with 15.