User blog comment:DaNASCAT/Technical Update: January 6, 2016/@comment-4129195-20160107194911/@comment--20160107200316

On top of that, navigating the photos now use the page counter system (?page=4 at the end of the URL for page 4) where before you could navigate them based on dates. Before the new code was added, if you went back into the old photos on old dates, the end of the URL would look like "?until=20140722134946". You could toggle the "2014" but for any year and find photos based off dates that way. No longer possible now, and I hope it will be fixed or at least added back.