The Supreme Court will hear arguments over same-sex marriage on April 28.
The court released its calendar Thursday for the final two weeks of arguments this term and allotted the gay marriages cases two-and-a-half hours on the last Tuesday in April.
The cases come from the Cincinnati-based 6th U.S. Circuit Court of Appeals, so far the only federal appellate court that has upheld state bans on same-sex marriages since the justices' 2013 ruling striking down part of the federal anti-gay marriage law.
Lawyers on both sides will get 90 minutes to argue whether gay and lesbian couples have a constitutional right to marry everywhere in the U.S. Another hour will be devoted to the question of whether states must recognize same-sex unions performed elsewhere.
A decision is expected before July.