The Community Calendar publishes events, meetings and fundraisers in The Jamestown Sun at no charge. Thursday, Aug. 6ADVERTISEMENTBuffalo City Group AA, 7:30 p.m. (open, speaker meeting), United Presbyterian Church, 302 2nd Ave. SE, or call 1-701-566-9575, conference ID 871 238 125 #ADVERTISEMENTDowntown Arts Market, 5:30-7:30 p.m., Hansen Arts Park. Friday, Aug. 7Jamestown Overcomers Narcotics Anonymous, 7:30 p.m., Seventh-day Adventist Church, 1201 4th St. NE. James River Alcoholics Anonymous, noon (closed, topic) and 8 p.m. (open, birthday night potluck), AA Clubhouse, 518 10th Ave.