Still not sure where you are getting the 60 minutes or 1 hour. Its really simple, if you are 107 you should remember from the test. For 107, you only get 30 minute before sunrise, or, 30 minutes after sunset in continental US including with anti collision lights. So no, in the continental US, you can not fly as 107 60 minute after sunset (or 60 min before sunrise) without out a waiver as you would be 30 min beyond the 30 min after sunset (or before sunrise) rule. Its pretty straightforward. Happy to take offline and chat if you like.
Because civil twilight is defined as 1hr after sunset...not 30min after sunset. You are right, this is actually in the drone class and on the test. You only get 30min before sunrise or after sunset if you do not have anti-collision lights. You get 1hr (the definition of civil twilight) if you do, its that simple. I honestly have no interest in splitting hairs offline over the definition of civil twilight offline especially since it is spelled out right in every link I've provided.