Blue Origin is once again counting down to the first launch of its orbital-class New Glenn rocket, buoyed by a better weather forecast.

Blue Origin is planning to launch its reusable heavy-lift New Glenn rocket for its inaugural voyage at 1 a.m. EST Sunday if weather conditions allow it to proceed.

Blue Origin pushed again its planned debut launch of its New Glenn rocket from the Space Coast, now targeting an early Monday morning liftoff. The 321-foot-tall rocket making its debut on the NG-1 mission is targeting a three-hour window from 1-4 a.