Surely the rapture will occur at 6pm British Summer Time, after all God is an Englishman !
Great question Moshe, I am glad Christians are thinking about this.
The WT touched on the subject of still-born babies in a book in the early Seventies, I cannot remember the title, they wrote the usual cop-out, we do not know and leave it to jehovah.
You can take a JW to the question, but you cannot make him think.