Go to the lower right corner of the screen, and there is a twitter button. Click on that. What does it say? This is what I've been seeing for many hours - the time stamps do not change even with a hard refresh.. input?
I've cleared the cache in chrome, hard refresh, and even used firefox - it still says 5 & 6 minutes ago for me for the last 2 tweets.. And because I do not have a twitter account, I am obviously not logged in.