See list attachedOctober 2, 196868-PA-T-213APA/Chief, Apollo Data Priority CoordinationLunar orbit revolution counter for C’
This may seem like a trivial matter – however, before any confusion arises let's firmly establish the means of identifying revolutions in lunar orbit by number. Specifically, unless there's some good reason for choosing another way:
1. Revolutions will be started and ended at 180° lunar longitude, i.e., on the back of the moon near the point of lunar orbit insertion (LOI). As I understand it, the RTCC is programmed this way.
2. The first revolution in lunar orbit shall be, appropriately, called number one (1). It starts at LOI (1) and ends approximately two hours later as the CSM passes over 180° longitude.
- Jan 11, 1968 – First 2 hours on the moon is a countdown to launch – simulated or real thing. (3.2σ)
tindallgrams02.pdf
