CFR › Title 25 › Part 900 › §900.24225 CFR §900.242Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkThe retrocession is effective on the date which is the earliest date among:(a)One year from the date of the Indian tribe or tribal organization's request;(b)The date the contract expires; or(c)A mutually agreed-upon date.