When I hang out with Brits, especially when I was younger, it used to be that the sun never sents on the Empire. Therefore, it is happy hour somewhere, right?
One time I found myself in the DFW airport at the good Lord only knows what time, I honestly don't remember (I was flying halfway around the world). I grabbed a split of wine off the cafeteria, and a mere child looked at me and told me that they couldn't sell booze at that hour of the day. THEN he added, what kind of drunk buys wine at this hour anyway? His boss came up behind him and tore him a new orifice. "these are international travellers, you have no idea what time it is to them." He reiterated that they could not, in fact, sell me the wine, but apologised for the kids' comments (and yes, according to my body clock, it was a perfectly reasonable hour for a glass of wine).
As we used to say, heck, it's five o'clock somewhere.