Feast day
The memory of St Simon is celebrated every year on June 25. Last feast was on a Tuesday. Next feast in 2025 will be a Wednesday on 5 months 1 week.
Fast
complete fasting day (nisteia)
The St Simon Day is not a fasting day per se, but in 2024 the date of June 25 falls within a fasting period.
Take a look at the ephemeris of the day to see other saints and given names celebrated on the same day.