This Friday at 6:31 (exactly when this post was put up) is 1234567890 Day. At 6:31 pm EST the Unix time will have been 1234567890. I have no idea what that means exactly but I did find this description online:
"Unix time [is] defined as the number of seconds elapsed since midnight Coordinated Universal Time (UTC) of January 1, 1970, not counting leap seconds. It is widely used not only on Unix-like operating systems but also in many other computing systems."
Does that explain it better? Yeah, me niether. But happy 123456789 day anyway