The flight plan called for a crew rest period before leaving the module, but Armstrong asked for this be moved to earlier in the evening, Houston time. When he and Aldrin were ready to go outside, "Eagle" was depressurized, the hatch was opened, and Armstrong made his way down the ladder. At the bottom of the ladder Armstrong said, "I'm going to step off the LM module now". He turned and set his left boot on the lunar surface at 02:56 UTC July 21, 1969, then said, "That's one small step for man, one giant leap for mankind." The exact timing of Armstrong's first step on the Moon is unclear.