Despite the fact that the aliens have just discovered their hearts are under their abdomen, when one of them needs cardiopulmonary resuscitation, they perform this on his chest.
The NCO in the control room has a diamond on his stripes indicating that he is First Sargent. This is an administrative position with no operational role.
The village is three hours from the Stargate with a round trip being 6 hours: however, several trips are made back and forth with no indication of a night cycle or shadows moving. Now, it is entirely possible that a day on the planet is 100 hours or more, or there are two, or more, suns positioned around the planet, or the planet doesn't revolve like Earth, thus making a night cycle short or non-existent.
When Teal'c returns through the Stargate, the announcement can be heard declaring off-world activation followed by the Stargate noise but the Stargate can already be seen active in the background.