Here is my simplified Sarum calendar from December 2020 to end of November 2021. I have given only the Sundays and Feasts, so you are advised to consult the rubrics of the missal, breviary, pie and customary to establish priories of memories and suchlike. I hope in time to develop a methodology to produce a complete ordo for each year.
This ordo can be freely printed for liturgical use or reference.
You can also refer to Dr William Renwick’s perpetual Sarum calendar:
This kalendar is valid for all years. It consists of three sections. Section 1 runs from January 1-January 14. At this point Section 2 begins. Section 2 has five parts, each corresponding to one of the five weeks during which Septuagesima, Easter, and all the other days of the moveable part of the year occur. Section 3, again valid for all years, takes up the kalendar during the week July 29-August 4 and completes the year.
–Sections 1 and 3 (single document)
-Section 2, year 1: Septuagesima falls on January 18-24; Easter falls on March 22-March 28.
-Section 2, year 2: Septuagesima falls on January 25-31; Easter falls on March 29-April 4.
-Section 2, year 3: Septuagesima falls on February 1-7; Easter falls on April 5- 11.
-Section 2, year 4: Septuagesima falls on February 8-14; Easter falls on April 12-April 18.
-Section 2, year 5: Septuagesima falls on February 9-15; Easter falls on April 19-April 25.