december
The shortest "month" of the Gregorian calendar has 28 days.
December has 31 days in the Gregorian calendar, as that is the calendar that we now use.
In the Gregorian Calendar the 11th month is November.
There is no month called Octo in the Gregorian calendar
July.
Not in the Gregorian calendar.
Febuary
November
Not in the Gregorian calendar
Yes.
September.September.September.September.September.September.September.September.September.September.September.