Mark your calendar: 10 notable changes on the 2015 Sprint Cup schedule Jared Turner Oct 20, 2016 at 4:50p ET Atlanta Motor Speedway The fast, 1.5-mile tri-oval moves from Labor Day weekend to the second race of the season. NASCAR via Getty Images Brian Lawdermilk Phoenix International Raceway -- spring Instead of visiting the Valley of the Sun in Week Two as it has the past several years, the Sprint Cup Series won't head to PIR until Week Four. NASCAR via Getty Images Sean Gardner Texas Motor Speedway -- spring After returning to a Sunday afternoon date for one year only in the spring, TMS will again host a Sprint Cup race on a Saturday night in April. Getty Images for Texs Motor Spee Jerry Markland Bristol Motor Speedway -- spring Thunder Valley's spring date moves back five weeks, from mid-March to mid-April. NASCAR via Getty Images Jeff Zelevansky Sonoma Raceway Unlike years past, the NASCAR Sprint Cup Series will get a week off before heading west to race at the twisty Wine Country road course on June 28. NASCAR via Getty Images Jared C. Tilton Kentucky Speedway Instead of heading to the Bluegrass State the week before the summer race at Daytona, the Sprint Cup Series rolls into Kentucky the week after. NASCAR via Getty Images Robert Laberge Daytona International Speedway -- summer For one year only, the annual summer classic at the World Center of Racing moves from Saturday night to Sunday night. NASCAR via Getty Images Streeter Lecka Darlington Raceway The legendary egg-shaped oval moves from a mid-April date back to its traditional Labor Day weekend slot. Getty Images Kevin C. Cox Charlotte Motor Speedway Instead of hosting the middle race of the Chase Contender Round, the 1.5-mile track located in virtually every team's backyard will open up the second round. NASCAR via Getty Images Chris Trotman Kansas Speedway In a swap of fall race dates with Charlotte, Kansas will now host the second race of the Chase Contender Round, not the first. Getty Images Jared C. Tilton Next Gallery 5 The five most intriguing new driver-crew chief pairings of 2015 Start Gallery » FOX Fantasy Auto Form a Racing Team, Compete for Prizes Play Now!