Let's say clan war starts at 4:25 PM. I am busy from then until the end of the day and only have enough time to make one attack. By the time I get home the next day, the war is over. I only would have enough time for one attack if this happened.
Raid in bed at night before you sleep.
Raid during lunch the next day at work or in the morning during your commute to work or like I said before wake up 10mins earlier and raid then...