The are always 30 or 31 days in a month, apart from February, which has
28 days (or 29 in a leap year ). Here is a rhyme to help you remember the
days in each month:
'Thirty days in September, April, June and November. Once short February's done, all the rest have thirty-one'
This means there are 365 days in a year - or 366 in a leap year.
It's a leap year if the year is in the 4x table - 2016 is a leap year, as is 2020, 2024, etc.
How many days in August?
It's not one of the months with 30 days, so it must be 31!