So our government officially recognises our country as being "Under God", and by extention, Christian, by encouraging it's citezens to pray to pray? So messed up if you ask me.
Anyways, I went to the website to scope out the enemy (just kidding) and they had a donation page (Oh yeah, I forgot that God charges you to telepathically speak to him), as well as instructions on HOW TO PRAY. http://nationaldayofprayer.org/
"Usually Satan will try to suggest to you that your prayers were not heard. He will encourage you to look to the problems again and get your eyes off God. He will try to get you to talk as if you are not sure if your prayer is answered. If he succeeds in getting you to express doubt it is likely that your mouth confession will cancel the effect of your prayer. Therefore guard your mind and heart, resist the temptation to talk negatively about the situations with others, especially with those with whom you are praying"
You know that sneaking suspicion that your prayers aren't being answered, and that there isn't a magical sky wizard there to listen to your problems and grant your wishes? Thats not Satan.
Thats your inner voice of reason.