When presented with a web site containing multiple pages of posts, in chronological order, on which side of the screen do you expect to see the buttons linking to older posts and newer posts? For some reason it seems logical to me that the button on the right should lead back in time. I’ve seen sites that work both ways.
Even if I were floating around in the vastness of space I would instinctively look toward my left if searching for the past.
Most often past is to the left and future is to the right. If I saw unlabeled arrows, that’s the convention I’d assume.
In my timeline, past is to the left.
It’s off in the fourth dimension, but I always have a hard time pointing that way. Especially on a 2D screen.
I also see past as left, future to the right. Do you think it’s different in languages where the characters go from right to left?
I dont think I consider it in terms of direction anymore. Sure, there are the printed and online timelines that start from the left and work forward to the right, but I’ve led heritage walks where I stand in a certain place, giving my spiel, and the older buildings and features are to the right, the newer ones to the left, so – direction tends to change, depending on what the heck I’m doing. 
Left is always past for me, right is future. Probably because that’s how pretty much every timeline I’ve ever seen is arranged, and I read from left to right, thus the words I’ve already read (past) are on the left and the words to read (future) are on the right.
The past is behind us, the future before us. Left and right are the present.
So life is all circle-strafing?
It often does feel like I’m just spinning around the same place.
Well, you’re a loony. 
The past is to the right, because the future is all that’s left.
When you read left-to-right, the words you have already seen are to the left. Therefore, the past is to the left.
However, I also think of dates as though they are in a calendar that goes top to bottom, so sometimes I think of the past as “up” though in a “behind me” kind of way.
The past is left. Behind.
Conservatives adore the past, conservatives are on the right, therefore the past is on the right.
Liberals are progressive, they look to the future for progress. LIberals are on the left, therefore the future must clearly be on the left.
Always happy to 'splain things to folks.