Start of the period	End of the period	Due date
January	2013-01-01	2013-01-31	2013-02-15
February	2013-02-01	2013-02-28	2013-03-15
March	2013-03-01	2013-03-31	2013-04-15
April	2013-04-01	2013-04-30	2013-05-15
May	2013-05-01	2013-05-31	2013-06-17
June	2013-06-01	2013-06-30	2013-07-15
July	2013-07-01	2013-07-31	2013-08-15
August	2013-08-01	2013-08-31	2013-09-16
September	2013-09-01	2013-09-30	2013-10-15
October	2013-10-01	2013-10-31	2013-11-15
November	2013-11-01	2013-11-30	2013-12-16
December	2013-12-01	2013-12-31	2014-01-15