A law allowing gay and lesbian couples to marry takes effect today in the Republic of Ireland.

Justice Minister Frances Fitzgerald will sign the commencement order that brings the Marriage Act 2015 into legal effect. According to the Irish Independent, more than 300 gay couples have lined up to marry.

But a 24-hour regulatory delay will keep people waiting until Tuesday to exchange vows. The new law also recognizes the foreign marriages of gay couples. Ireland will also phase out civil partnerships, which first became available in 2011.

Couples in a civil partnership may continue in that union or transfer their relationship to a marriage but no new couples may enter a civil partnership.

In May, Ireland became the first nation to legalize such unions by a popular vote.