The SCI FI Channel in the United States is ready to roll into September, with four more new episodes of Stargate Atlantis anchoring Friday nights. The network announced next month’s schedule today, by way of its online Schedulebot.

New episodes airing next month include:

SEPT. 5 – “Whispers”
SEPT. 12 – “The Queen”
SEPT. 19 – “Tracker”
SEPT. 26 – “First Contact”

Though the ninth episode in the production order, “The Queen” moves up to the eighth spot for broadcast, bumping “Tracker” to episode nine.

The first half of the season concludes with “First Contact,” the first half of a two-parter guest starring Stargate SG-1‘s Michael Shanks, on September 26.

The show will then take a break for the 2-hour premiere of Sanctuary on October 3, and is expected to return with “The Lost Tribe” on October 10 in its new time slot, one hour earlier.

This month Atlantis will take two breaks, with no new episodes airing on Friday, August 8 or August 29.

Also in September, SCI FI will air a pair of Stargate SG-1 Season Ten marathons. Catch up on episodes five through 12 on September 12, and episodes 13 through 20 (the series finale, “Unending”) on September 26. The first four of Season 10 will air at 6 p.m., September 16 to the 19th.

Classic episodes of Atlantis and SG-1 will also continue to air weeknights at 5 p.m. and 6 p.m., respectively.

Learn more about what is to come in the fifth season of Stargate Atlantis in GateWorld’s episode guide! New episodes air Friday nights at 10 p.m. (9 Central) on SCI FI, Mondays at 8 p.m. on The Movie Network in Canada, and Tuesdays at 8 p.m. on Sky One in the U.K.