"Maximum burning dust from Halley's Comet at around 3-5 am on the 6th? Are you crazy? Far too early. Get them to re-schedule."
"But, but, but, ..."
"Make it so!"
On a more serieous note: are we talking GMT? CET? CEST? BSC? SSC? (No, wait ...) Anyway, what time do I set my alar clock to?