They can be a square. More commonly they are a rectangle.
The area is 9*B square inches where B is the breadth of the calendar.
It is Square and has triangles on the top and bottom. The numbers are placed around the Calendar and are very curly.
The calender you can acess if you click the square in the top left courner.
the Gregorian calendar
the Roman calendar
No, the 2012 calendar has its dates on the same days of the week at the 1984 calendar and the 2040 calendar. The 2000 calendar is likewise the same as the 1972 calendar and the 2028 calendar.
You can't convert inches to square feet. Inches measure length or distance, while square feet measure area. It's like your trying to convert a temperature to a calendar date. It doesn't work.
A rectangle measuring 18 by 12 inches has an area of 216 square inches.
Lunar calendar
The Gregorian Calendar is solar and the Hebrew Calendar is lunisolar.
calendar
'Calendar' in Spanish is 'calendario'.