>Feb 26 is T-21
>March 19 is 0
Exactly why the post has stated "Applying the [-21] start to either 26th = Mar 19th "
It is not the posters fault, if you cannot comprehend what was stated, slow down and try again.
Pattern ignored.
You can still enjoy the ride without a roadmap.
Multiple booms are enroute; please remain comfy, and enjoy the show.