That's very flattering of you Andy, thank you. I've screen dumped the Met office forecast, things may change. I'll keep an eye on it. If there is a big change I shall post it.
I'm sorry to say that I was not sure what you meant when you said, "Friday night 10 - first light in Hebden". I assume you meant 10 a.m. "First light" would be Saturday morning about 5 a.m., so I am puzzled.