Conversation so far:
When did Walter join CBS Evening news?
but later the CBS Evening News on September 2, 1963.
for how long was he the anchor of CBS evening News?
Cronkite's tenure as anchor of the CBS Evening News made him an icon in television news.
What kind of stories did Walter report?
A key moment for Cronkite came during his coverage of John F.
Kennedy's assassination on November 22, 1963.
What was he known as during his time at CBS?
Apollo 11 (with co-host and former astronaut Wally Schirra) and Apollo 13 moon missions, Cronkite received the best ratings.

Question: What were his ratings for the Apollo 11 and Apollo 13 missions?
Self-contained rewrite: What were Walter Cronkite's ratings for the Apollo 11 and Apollo 13 missions?