The U.S. Supreme Court says it will hear two days’ worth of arguments over laws affecting gay marriage during the last week of March. The justices announced yesterday they will hear arguments in Hollingsworth v. Perry on March 26 and United States v. Windsor on March 27.

Windsor, which comes from the U.S. Court of Appeals for the Second Circuit, concerns a section of the Defense of Marriage Act that denies gay couples who legally marry the right to obtain federal benefits available to heterosexual married couples. Hollingsworth involves California’s constitutional amendment that forbids same-sex marriage. The court scheduled one hour’s worth of arguments on each day, but justices can still extend the amount of time given to arguments in each case.

Nine states—Connecticut, Iowa, Maine, Maryland, Massachusetts, New Hampshire, New York, Vermont, and Washington—and the District of Columbia allow gay marriage.