Best pair of albums by the same artist/band in a single calendar year

(Reading after posting--very happy to see others had the same thought re: Sault.)

holy shit, the two towering pinnacles of my Magnetic Fields binge (The Charm Of The Highway Strip and Holiday) came out within 6 months of each other in 1994!

The close release dates of the two albums meant that some magazines reviewed the albums together, which annoyed Merritt.[7] It has also been speculated that this would have meant consumers would buy one of the two albums, but not both.[7]

oh, foolish consumers if so! but also, lol

imagining an ILM 1994 EOY poll where I get very worked up about them getting votesplit even as Illmatic and Dummy are knocked into surprise 2nd and 3rd place finishes by...Low

Prince in 1982 - 1999/ What Time Is It?/Vanity 6

I know the post specifies "calendar year" but if we just include any 12-month stretch, June 1970 - June 1971 was very good for Tim Hart and Maddy Prior; Hark! The Village Wait and Please to See the King (with Steeleye Span) and Summer Solstice (as a duo)

Also MF DOOM dropping Madvilliany and MM... FOOD in 2004

iirc Holiday was recorded first but some label issue meant it got delayed until after Charm of the Highway Strip (which was their first on Merge)

Help! and Rubber Soul (1965)

Sgt. Pepper and Magical Mystery Tour (1967)

The Clash released 5 LPs from December 1979 to December 1980.

The Monkees: More of The Monkees; Headquarters; and Pieces, Aquarius, Capricorn & Jones Ltd. (All in 1967)

hard to beat Haruomi Hosono doing Paraiso and Cochin Moon in the same year, plus a third of Pacific AND forming YMO and writing a bunch of the first album