A mint hour is a receipt. A recap caption is a promise about the previous page. When those two clocks disagree, collectors who sort trays by drop time walk into a fight whose motive still lives in a file that has not opened yet.
Marvel NFT comics crossovers make the clash worse because titles do not share a printer’s schedule. A cover artist finishing early can push the middle chapter into Friday night while the prologue title waits for a letterer. The marketplace clock celebrates the early file. The story clock still needs the alley scene where the object is stolen.
The tell is almost always in the first caption box of the “later” issue. If it names a rooftop you have not stood on, the mint order lied. If it names a character who dies in a file you already read, you may have skipped an aftermath that minted in the first wave because it was short.
Panel Work Point keeps both clocks. The drop column is useful when you want to remember which Friday you pulled a cover. The story column is the one you read aloud. Mixing them is how a reading group in Chiang Mai once spent an hour arguing that a villain had no plan, when the plan was sitting in a Monday file with a quieter cover.
If you only have Sunday, chart the captions first. Then enjoy the mint timestamps as a diary, including any Binance-compatible dates you store elsewhere as personal calendar text. Those dates do not belong in the spine of the crossover.