All 951 cards of the seven Japanese releases are listed, and none of them is reconstructed from a list of names. The counts match the printed numbering of the card database: 86 in February, 115 in March, 86 in April, 119 in June, 94 in July, 121 in September and 330 in November. 249 of them print past the end of their own set and are shown as printed rather than normalised — every one is a full-art, gold, Hyper Rare, Amazing Rare, shiny or shiny full-art card.
The Japanese printing is the first-hand source here. Type, HP, retreat cost, illustrator, every attack with its cost, and the rules text of every Ability are read from a Japanese listing of the card. English supplies two things only: the official English card name, and the verdict on whether the English printing is the same card. All 125 Trainers and 22 Energy cards carry the name printed on the Japanese card, and every Pokémon name was read from the card page rather than from a species list. Unlike every earlier year on this site, the card database has no data at all for the Sword & Shield generation in Japanese — the whole generation comes back as an empty shell — so the Japanese side of 2020 is read from a single source, and every count was checked against the printed numbering rather than against a declared total.
The secret counts are where the two sources disagree, and the printed cards win. The Japanese database reports Shiny Star V as 190 cards — the numbered set with the secrets dropped. The product is 190 numbered plus 140 above them: 330, which is what is on the card faces and what this page uses. The pattern holds across all seven: 70 + 16, 96 + 19, 70 + 16, 100 + 19, 76 + 18, 100 + 21 and 190 + 140. Where a source reports only the numbered run, this page counts what was printed.
17 cards carry no rarity at all, and that is the card, not a gap in the data. All of them are inside Shiny Star V, where the source leaves the field empty on 41 cards: 24 of those were filled from the same card reprinted in an earlier 2020 product — the same card, with the same printed rarity, read from a page that has it — and 17 are left blank because no Japanese printing of that card exists this year to read it from. They are shown blank rather than guessed at, including four cards — 11 Blipbug, 14 Gossifleur, 15 Eldegoss and 174 Professor’s Research — that are obvious by eye and still not citable.
The 9 Amazing Rares are read from the symbol on the card, not from a field. The source returns an empty rarity for every one of them, in both products that print them. They are identified by the attack name — every one is called Amazing something — and by the A printed where the rarity symbol goes: six in Legendary Heartbeat at 009, 015, 033, 044, 050 and 056, and three inside Shiny Star V at 021, 036 and 117. Nine in the year — and the cross-check is that English ends up with exactly nine cards flagged Amazing Rare, six of them in Vivid Voltage and three in Shining Fates.
The pairing verdict is stated for every card, and the number that matters this year is zero. 0 of the 951 are printed in English on the same day as Japan — that is a fact about 2020 rather than a gap in the data, because every Japanese product of the year goes on sale between eight and eighteen weeks before its English counterpart. 620 are printed in English later inside 2020, 39 are a different card of the same species as something English printed in the year — marked as such rather than folded into the count, because a card that is not the same card is not a printing — 221 are reprints of cards English had already printed, 37 wait for February 2021 and 34 never printed in English at all. Japan prints 951 cards in 2020 and English prints 909, and the difference is Champion’s Path — 80 cards with no Japanese release day behind them — set against four Japanese products whose English edition lands in 2021.
Two things are incomplete and are declared here. 0 Pokémon cards in this year carry no illustrator credit — every Pokémon card of 2020 has an artist, and that gap is zero for the first time on any page of this almanac. And Champion’s Path is counted on the English side of 2020 only: it is a boxed special expansion with no Japanese release day, its 80 cards are counted in the 909, and it is the reason the English total is not simply the Japanese total minus what had already crossed.