In this year 2015, Holi will be enjoyed at 6th March 9 AM and Deepawali will be celebrated at 11th November 8 PM. The total time interval (in hours) between the two will be
From 6th March 12:00 night to 11th November 12:00 night; Total days = 365 - (31+28+5+19+31)
= 251
So hours = 25*24 = 6024
Now for 6th March deduct 9 hours and for 11th November deduct 4 hours so
net hours between events = 6024 - 13
= 6011 hours
Option 7)