Apollo 11 was the spaceflight that first landed humans on the Moon. Commander Neil Armstrong and lunar module pilot Buzz Aldrin formed the American crew that landed the Apollo Lunar Module Eagle on July 20, 1969, at 20:17 UTC. Armstrong became the first person to step onto the lunar surface six hours 39 minutes later on July 21 at 02:56 UTC; Aldrin joined him 19 minutes later.
We're an hour ahead of UTC at the mo, so the landing would be 9:17pm tonight and the first step 3:56am tomorrow.
Sky at Night on BBC4, 8pm (repeat of last week's ep), and also a Moon Landing Live revisit on C4 8-9.30pm