The Guinness Toast here is at 11PM tonight (roughly 14hours) is this just a marketing thing here in the US or do yuns have it there too?

It's a marketing ploy.

To be fair, I've been drinking a lot less Guinness since I moved to Cambridge. This is for two primary reasons:

1. The selection of real ales in Cambridge is generally superb, so I've not really felt the need to.
2. I used to live five minutes walk from Molly Malone's Irish pub in Richmond, Surrey, which served a cracking pint of Guinness. Now I don't.