Artemis II launch countdown officially beginsNewsDuration 2:06After two previous delays, the countdown for the Artemis II launch officially began with the activation of the mission countdown clock at 4:44 p.m. ET on Monday. The first launch opportunity is a two-hour window starting at 6:24 p.m. ET on Wednesday, depending on weather conditions.

Source: CBC News March 31, 2026 14:34 UTC