This picture is a biomed stripchart of the Apollo 10 Astronauts Tom Stafford, John Young and Gene Cernan during their last lunar orbit before returning to Earth.

The digital time track at the very top edge of the chart is the Serial Decimal Time Code track which decodes to day 144 at 0737:10Z. Day 144 is the 144th day of the year, i.e. May 24, 1969.

Scan and notes: Brian Riehle, MSFN Guam.