How to change the backround color of whole td of event date

i’m need solving this problem too

This can be done. You need to override the CSS of the calendar.

I did something like this:

#content .cat1,
#content .cat1 .fc-event-skin,
#content .fc-agenda .cat1,
#content a.cat1,
#content a.cat1:active,
#content a.cat1:visited{background-color:#e31837 !important;min-height:139px;z-index:1;margin:-8px 0 0 0;border:0 none;width:100%;position:relative;padding:0;}

#content .fc-grid .fc-day-number{z-index:8888;position:relative;}

#content .fc-grid .fc-day-content{padding:0;}

#content .fc-event-time,
#content .fc-event-title{top:15px;position:relative;padding:0 10px;display:inline-block;}