2026-07-02-16-31-52 -> -----00011222235667
Hopefully it will remain a nonsense and never be seen in the wild, unlike the phone number field which I found on a real website which responded to scroll events to increase and decrease the value it contained.
In fact, the first time I signed up for my own line, it happened unintentionally, and it was only after Pacific Bell had installed the line that I figured out it spelled something, and I informed my father and it was hilarious (the spelling was "BUG-BLOW").
Reminds me of when I tell Siri, "Play 2-G-B Sydney" and she responds, "Now playing two gigabytes."
2026-07-02 16:45 becomes
2026-45-16-06-02
Bonus points for using a very confusing separator... Maybe {?
I vote for "end of unit" (ASCII 0x1F).
2025-06 and 2026-05 both have the same digits, for example.