#Time Travel Writeup
From the problem's title and description, I figured out that it was most likely related to an internet time machine. I used the internet archive wayback machine: https://web.archive.org/web/*/tjctf.org
In April and May, there were an abnormal amount of screenshots taken of the TJCTF page. At first, I went through all of them, expecting one to have a Google Apps extension or something similar that was out of the ordinary. This of course, was the wrong idea.
Later, after the hint about "meta" was released, I noticed that the google-sites-verification meta tag was different for each of the screenshots taken, and that it was in a base64 encoded format. Included is the program I wrote to scan through each day's 8 screenshots (all taken at the same time) and print out the decoded text.
After about a minute of the program running, I caught the flag: tjctf{w1sh_i_c0uld_turn_b4ck_t1m3}