National Indian Day of Prayer. From the minutes of the Board of the Canadian Catholic Conference:

A request was received from the Indian Ecumenical Conference that the CCC declare June 21 a “National Indian Day of Prayer”. June 21 has traditionally been a sacred day of fasting and prayer for Indians throughout North America. Following some discussion, a motion was presented … and [it was] unanimously accepted by the meeting that once the Office for Apostolic and Missionary Assistance has ascertained that the National Indian Brotherhood has no objections to such an action they were authorized to proceed with declaring June 21 as a “National Indian Day of Prayer”.