I did however see this on tumblr this morning: http://enchantedbyhiddles.tumblr.com/post/134641691341/jerald-m-s-pang-jeraldmspang-twhiddleston.
The "6 December 8.30am" is when the blogger screen capped the tweet, not least because at the time of writing (9.55 6 December UK) it is not yet 6 December in HI. So when the original tweeter says "last night" he is referring to Friday night not Saturday night.
Go Scarlet Pimpernel Tom! Leap on that plane to Oregon (probably not...!!)