It’s not unusual for a front-loaded popcorn blockbuster like “Godzilla” or a comic book movie to have world beating Friday numbers which fall off on Saturday.

People pack the theaters on date night to “be the first to see” these pictures, which explains why those Thursday night openings have become commonplace.

A lot of the demand for them is sucked away, but studios get to crow Saturday that “We have a winner,” creating a bandwagon for their marketing departments to pitch.

Still, Saturdays, even with most people off from work and a LOT more showings available, typically fall off. Pictures for older audiences — “Chef,” for instance, and “Belle” — do better on Saturdays.

Kids films do better on Saturdays and hold more audience on Sundays.

“X-Men: Days of Future Past,” lost about 15-20 % of its juice between Friday and Saturday —  a “Godzilla” sized Saturday swoon. It’s still on a pace to clear $90 million by Sunday midnight. And maybe $110 or more with Monday thrown in.

But that’s well below “X-Men: The Last Stand,” the standard bearer in that franchise. Seven films into “X-Men” (with “Wolverine” outings, to boot), this franchise is definitely showing its age, more so than Hugh Jackman.

“Godzilla” lost a big chunk of its opening weekend oomph and is fading fast — a 77% plunge on Friday, 66% by Saturday. Word of mouth wasn’t dazzling, no surprise to those of us who found the movie heartless and humorless and a a bit of a drag.

“Blended,” Adam Sandler’s Warner Brothers vehicle, fell off Saturday and will not have reached $18 by midnight Monday. MONDAY. That’s a bomb, figuring in costs and the fact that his movies don’t travel (overseas box office is weak).

“Neighbors” did more per screen all weekend, and it’s been in release for weeks, now. It cleared the $100 million mark this weekend.

“Chef” moved comfortably into the top ten, despite showing on fewer than 500 theaters. It chased the last of the spring’s faith-based films, “Heaven is for Real,” out of the top ten.

“Rio 2” has quietly owned the animation market for more than a month and has cleared $122 million. Not a blockbuster, not a bust.

1. X-Men – $110 million
2. Godzilla – $35 million
3. Blended – $18 million
4. Neighbors – $18.5 million