July 1 is New Year's Day in college athletics, the day the previous year is put to bed and the current one begins. The 2022-23 athletic year ended this past Monday, when LSU vanquished Florida in Game 3 of the Men's College World Series; the 2023-24 year begins officially in early-to-mid August with soccer (Aug. 6 was the first game I found) and unofficially on July 12 with Big 12 football media days.
This July 1 is different, in that it's the date a number of realignment moves become official.
Studying the comings and goings of colleges and universities is a bit like tracking the flow of water between rivers and oceans: there's never a time when everyone is standing still, someone is always leaving one place for another.
But Texas and Oklahoma's impending departure from the Big 12 to the SEC was a nuclear bomb that sent water splashing every which way.
That move -- first reported by the Houston Chronicle on July 21, 2021; approved eight days later; originally slated for July 1, 2025 but later bumped forward a year -- directly affected no less than a dozen other conferences. And that doesn't include UCLA and USC's move to the Big Ten (to become official July 1, 2024) and any corresponding moves by the Pac-12.
A bomb dropped on the Big 12 offices in Las Colinas, Texas, eventually caused Post University, a private, for-profit university in Waterbury, Conn., to move its football team from the Division II Central Atlantic Collegiate Conference to the D2 Northeast-10 Conference.
Schools in italics become official members of their respective conferences on July 1.
SEC
Lost: None
Added: Oklahoma, Texas (effective July 1, 2024)
Big 12
Lost: Oklahoma, Texas
Added: BYU, Cincinnati, Houston, UCF
American
Lost: Cincinnati, Houston, UCF
Added: Charlotte, Florida Atlantic, North Texas, Rice, UAB, UTSA
Conference USA
Lost: Charlotte, Florida Atlantic, Marshall, North Texas, Old Dominion, Rice, Southern Miss, UAB, UTSA
Added: Jacksonville State, Kennesaw State (2024), Liberty, New Mexico State, Sam Houston
Sun Belt
Lost: None
Added: James Madison, Marshall, Old Dominion, Southern Miss
ASUN
Lost: Jacksonville State, Kennesaw State, Liberty
Added: Austin Peay, Queens
Colonial Athletic Association
Lost: James Madison
Added: Campbell, Hampton, Monmouth, North Carolina A&T, Stony Brook
Big South
Lost: Campbell, Hampton, Monmouth, North Carolina A&T
Added: Bryant
NEC
Lost: Bryant
Added: Le Moyne College, Stonehill College
Northeast-10
Lost: Le Moyne College, Stonehill College
Added: Post University (2024, football only)