Q: Passage: Created by Norman Collins and originally presented by Alan Ivimey, Woman's Hour was first broadcast on 7 October 1946 on the BBC's Light Programme (now called Radio 2). Janet Quigley, who was also involved with the birth of the UK radio programme Today, has been credited with "virtually creating" the programme.

Question: Based on this passage, when was late night woman's hour created? Let's give stream of consciousness first:
The relevant information is: Created by Norman Collins and originally presented by Alan Ivimey, Woman's Hour was first broadcast on 7 October 1946 on the BBC's Light Programme (now called Radio 2). Therefore, the final answer is 7 October 1946.