Update 12/10: Rocket Lab will attempt its second test launch of an Electron rocket today. The launch window opens at 2:30 p.m. New Zealand time on Dec. 11, which is 8:30 p.m. EST on Sunday, Dec. 10. The launch window is four hours long. You can watch the launch via the YouTube page above, courtesy of Rocket Lab.
https://www.space.com/39007-rocket-lab-second-test-launch-webcast.html