• given a date, find the related events in the Church Calendar, e.g. "Which events fell on October 14, 1066?" or "Produce the calendar for the whole week of April 29, 2000"  
   
• given any keyword or key phrase, find matching items in the Church Calendar, e.g. "Who of the Saints have the name Edward?   or "Which events are releated to the Holy Cross?"  
   
• given a movable event and a year in the Church Calendar, find the date of the event, e.g. "On which date was the Sunday of the Prodigal Son in the year 1190?"  
   
• given a date and a movable event in the Church Calendar, find the year(s) in a range , when they match some condition, e.g. "When is the next time when Mid-Pentecost falls on May 11th?"   or "In what years of this century the Apostle's Lent would be eliminated altogether if rendered by the Gregorian calendar?"  
   
• various calendar calculations: convert dates between Julian and Gregorian calendars, match dates with days of the week, add any number of days to a date, subtract any number of days from a date, subtract dates one from another. All calculations apply to both A.D. and B.C. periods.  

Transaction #10599