SpaceX plans to launch on the evening of Monday, Dec. 1, between 6:10 and 11:10 p.m. The countdown on SpaceX’s website appears to show a 10:28 p.m. Arizona time projected launch, though space launch times change depending on weather and other factors. Check the SpaceX website to see updated estimates.

Without reusable rockets, China has turned to a wide variety of expendable boosters this year to launch less than half as often as the United States. China has made 78 orbital launch attempts so far this year, but no single rocket type has flown more than 13 times. In contrast, SpaceX’s Falcon 9 is responsible for 153 of 182 launches by US rockets.