I have a fullcalendar with defaultView "month", the content from the calendar comes from the server using json.
When fullcalendar gets the json i save the "start" date parameter to a cookie.
When a user visits the calendar page i get the value from the cookie and set fullcalendar "defaultDate" to the value of the cookie.
For example when viewing October 2018 the cookie becomes "2018-09-30", cause the "start" parameter is 2018-09-30 when viewing October.
But when i now visit the calendar page (the "defaultDate" becomes the cookie value "2018-09-30") the fullcalendar displays September. But it should display October.
How can i get fullcalendar to display October?