United States Conference of Catholic Bishops News Release - July 21 at 7:39 AM

The Greek Orthodox Archdiocese of America is inviting all Christians and people of goodwill to join in a Day of Mourning on Friday, July 24 for the conversion of the #HagiaSophia in Istanbul back into a mosque after serving for over eighty years as a museum. The museum was a place of encounter and dialogue between people of all faiths and cultures. The Greek Orthodox have asked that every Church toll its bells, every flag be raised to half-mast and that the Akathist Hymn is chanted in the evening. For Catholics unfamiliar with the Akathist Hymn, the recitation of the Rosary is recommended, as both prayers entreat the Mother of God for her intercession.

https://www.goarch.org/-/july-24-day-of-mourning