So it turns out it is possible to view Tumblr posts in chronological order. …if they’re tagged, and up to a certain amount (a few hundred).

So later on, if you’re following the whiteout story and you missed a post and want to view them in chronological order to avoid spoilers, here’s the link, as well as the general format for tagged chronological Tumblr browsing.

https://mitigatedchaos.tumblr.com/tagged/whiteout%20story/chrono/

The next whiteout post is queued for tomorrow, and another one for the day after.