Can anyone tell me with absolute certainty when the dry portion of the Apollo 9 countdown demonstration test was held? This is the portion involving the crew.'Apollo - the definitive sourcebook' by Orloff and Harland states that the wet CDDT was on February 11, 1969, and the dry portion the following day, February 12.
NASA's 'Saturn Illustrated Chronology' (MHR-5) states February 19. I also have a photo of the crew in spacesuits posing in front of the Saturn 5 dated February 19.
And I have a series of KSC photos of the crew suiting up for the CDDT dated February 23. KSC photo dates are usually very reliable, but obviously this can't be correct as the countdown for launch started February 22.
Please, no speculation: only if you are absolutely certain.