I know there is so much animosity going on in KAA, I thought why not humour it a bit.
Karwa chauth comes in between Dashera and Diwali. they got married around dashera(remember with all the comparision between gauri goign o saural and durga ma's moorhty put in water). they showed diwali right after their wedding and now karwa chauth. Ekta has got her calender messed uo along with her brain.