Yes, that's what I said: they died during the early morning hours of 17 July. But I've also heard people refer to anything where it's dark out as "the night", even though they're technically wrong. Actually, determining whether a death occurred during day, evening or night is quite important in things like medical examiner cases, etc.
However, unless National Geographic fixes the security certificates on their web site for ordering securely online, I won't be ordering the DVD from them today. All kinds of alarms went off on my PC when trying to place a secure order this afternoon. Just a heads up to anyone else planning on trying to purchase the DVD directly from NG.