Q,
In the event you surreptitiously responded last night as Anon, I have figured out more of what you were hinting at. If it was just an Anon, then All's Well that Ends Well.
Orange marker is hour hand, pink is minute: 5:20. ET_phone_home.png filename: E-5 T-20 -5:20. Alternatively, if 5 means 25/55 mirror, then we land at 0600. Checking clock, one post on 9/3/18 (2067) matches, spelling out DECLAS with D-1 etc… Following the pen as it were.
File name is quite cryptic. Image was partial cap of Herridge notes. No EXIF/meta found. Reference to movie scene? (ET presses 3, 2, 1; triple meaning?) A hint to make contact was overlooked?
Another tacit hint would be greatly appreciated.
Thanks again, keep up the Good Work!