It will be the 1,040th time since the League's founding in 1917 -- then with just four teams -- that all teams have seen action on the same day, the 75th time in the modern era that is defined by the start of the so-called "Original Six" in 1942.
The NHL was a six-team League from then, down from seven with the 1942 folding of the Brooklyn Americans, until 1967 expansion added six new franchises.
Every team was in action on Oct. 18, 1967, a Wednesday that was five schedule days into the 12-team NHL. Until then, the League had never seen a busier night.
In six arenas, from Madison Square Garden in New York to Oakland Coliseum in California, large and small crowds witnessed three ties, a blowout, two games decided by a single goal, the defending Stanley Cup champion defeated and a hat trick scored by a future Hall of Famer.
It generally took a bit of time for the new teams to rally crowd support, the three West Division games combined drawing 3,387 fewer spectators than the New York Rangers had against the Montreal Canadiens.
From east to west, a trip back to a historic six-game schedule, by comparison a reasonably quiet night in today's NHL.