Open redirect question

I am having a real hard time identifying the date in which the open redirect exploitation happens in the access log provided. I answered the other two questions just fine but the first question is no good. I have tried many of the date and time stamps and I keep getting not correct. I really need help with this.

Good morning Travis,
Did you manage to find the solution for question 1 in the Open Redirect question?
I struggle with the same thing you mentioned.
I hope you will have time to reply.
Thank you in advance.
Kinds regards,