Toddler & Night Terrors

Does she have her terrors at a consistent time of the night? I'm assuming that she goes to sleep at a fairly consistent time.I've heard that some parents go in and wake the child 15 min before the typical time. Our daughter had them infrequently and usually when DH had a late meeting and couldn't tuck her in. He started calling just to say good night over the phone on those rare occasions.