The Orthodox church calendar can include not only the dates of holidays and days of commemoration of saints. Some of the calendars have very useful additions in the form of common prayers and troparia to the ranks of saints, as well as an application with the names of all the saints of God.
In order to find your patron saint, the Orthodox Church calendar with troparions and kontakions is best suited. It can be purchased in diocesan shops or directly in churches. The patron saint of man is that saint of God, in whose name a man was baptized. In Orthodox churches, before registering for baptism, they check whether the name of the person who wants to receive the sacrament is in the calendar. If there is no such name, then they already choose from the available names of the saints and so name the person entering the Church.
In order to find the name of your heavenly patron, you first need to know your name at baptism. After that, you need to open the application of the Orthodox calendar with the names of all the righteous, glorified in the face of saints not only of the Russian Church, but also of other Orthodox Churches. The names of the saints in the calendar are in alphabetical order.
After finding our name, we pay attention to the date of the celebration of the memory of the saint. All this is also in the Orthodox calendar application. There can be several pleasing ones of God with one name (sometimes even several dozen). Opposite the name of each saint is an abbreviated date. This is the date of the commemoration of the righteous. Abbreviations are understandable, for example, "C" - September, "O" - October, "F" - February, "Yin" - June, "Mr" - March, and so on. It should be borne in mind that the dates are in the calendar according to the old style. To translate them into modern chronology, 13 days must be added to the date.
Now a few words about choosing your heavenly patron among many saints with the same name. The patron saint of a person is that righteous person whose remembrance day is the first from the time of baptism. If for some reason the date of the acceptance of the sacrament is unknown to the person, they look at the first date of commemoration of the saint with the name of the baptized from the moment of birth of the Christian.