Number of months with only 30 days
There are seven months 
that have 31 days and four months that have 30... ... A: Months have different 
numbers of days because a month is a measure of time that corresponds or 
nearly... [DOC] [TLE] Days in month trick [PAR] How do I tell which months have 30 days and which have 31 without reference ... 
are the only two months consecutively within the same year that have 31 days.