June 19: Trinity Sunday, Class I

Shield of the Trinity, manuscript ca 1255-65

Today is Trinity Sunday, which marks the final end of the Easter season and its aftermath, and the start of time after Pentecost.

The distinctive part of today's liturgy is the recitation at Prime of the Creed named after St Athanasius (although modern scholars suspect it actually originated in Southern Gaul), which firmly sets out the essentials of the faith in relation to the Trinity as a counter to Arian and other heresies.

June 18: Ember Saturday in the Octave of Pentecost, Class I

June 17: Ember Friday in the Octave of Pentecost, Class I

June 16: Pentecost Thursday, Class I

June 15: Ember Wednesday in the Octave of Pentecost, Class I

Hans Multscher, 1400 -1467

June 14: Whit Tuesday (Tuesday in the Octave of Pentecost), Class I

Borgia apartment fresco, 1492-4

June 13: Whit Monday, Class I