EST at 1:40 pm, updated on 23 February: Monday launched and modified to reflect the new T -0.

SPACEX is preparing to launch 21 Starlink V2 mini satellites in the Earth’s orbit from the Cape Canveral Space Force Station on Monday.
Falcon 9 rocket space launch complex is targeting a lift on EST (0426 UTC) from 40 to 11:26.
Spaceflight will now start live coverage about an hour before the liveoff.
https://www.youtube.com/watch?v=qafv3Adbnhk
On Sunday, the 45th Weather squadron located on the Patrick Space Force Base, estimates 60 percent of the favorable weather conditions at the opening of the launch window, a percentage that improves up to 80 percent by the end of the window. A low pressure system is expected to proceed through the Florida Peninsula on Monday, causing rain and scattered clouds. Primary concerns for launch will be a violation of thick cloud layers and cumial cloud rules.
SpaceX is using a new Falcon 9 First Stage Booster on this mission. The booster is believed to have a tail number B1092. The booster was rolled by the Launch Complex 39A Press Site launched at the Kennedy Space Center on Friday morning after the launch of the Starlink 12–14 mission.
A little more, eight minutes after the lift, the first stage will target a touchdown on the booster droneship ‘Read the bus instructions.’ If successful, it will be the 111th booster landing on JRTI and the 413th booster landing to date.
There are 13 of the 21 Starlink satellites on the board that offer directly to cell capabilities.