It had not yet been added at the time of the Tridentine Calendar of 1569 .
It had not yet been is no longer found in the present General Roman Calendar but , once added , it remained until the General Roman Calendar of 1960 .
It had not yet been added at the time of the Tridentine Calendar of 1569 and is no longer found in the present General Roman Calendar but , once added , it remained until the General Roman Calendar of 1960 .