"I'll fly away IN THE MORNING" - "I'll Fly Away"
"The MORNING of the rapture" - "I want to stroll over Heaven with You"
"On the bright and cloudles MORNING when the dead in Christ shall rise, ...
And the MORNING breaks eternal, bright and Fair" - "When the Roll is called up
Yonder""There is NO NIGHT there" - "In the Land of Fadeless Day"
There are many more songs, too. My question is why it takes place in the morning. It is true, however, that early morning is the best time of day, and that may be where they are getting it from. But is there any biblical refrence to the rapture taking place in the morning? Of course, only part of the Earth can experience Morning at a time.
(I apologize for my randomness.)