Not at all, it's just a misconception about prayer and which time of the day it's effective the most. Prayer said at any time of the day can be answered by God. Prayer does not have specific time for it to be effective, neither does God designate particular time for him to hearken to our prayers. As long a prayer is said with utmost sincerity and believing that it has already be answered before saying it, the prayer must get to God, and if it does, it must be answered. More seriously, the God we serve which we also pray to, is not a God that sleep nor slumber. If it were to be God is only active at night, that's when it would've been He only answer prayers during such hours. I actually know where this misconception is stemming from, because it is believed that during night times is when witches and wizards gather in their covens. But that does not mean that's when God can accept prayers targeted to disrupt their diabolic activities.