
Sunday Masses
Saturday
5:30 PM
Sunday
7:30, 9:00, 10:45 AM
12:30 & 5:30PM
Weekday Masses
Monday–Friday
6:15 AM, 12:00 PM
Saturday
9:00 AM
Holy Days of Obligation
2025
- January 1: Mary, Mother of God
Vigil Mass (December 31): 5:30 PM
8:00 AM, 10:00 AM, 12:00 PM, & 5:30 PM - August 15: The Assumption of the Blessed Virgin Mary
Vigil Mass (August 14): 7:30 PM
6:15 AM, 12:00, 6:00, & 7:30 PM - December 8: The Immaculate Conception of the Blessed Virgin Mary
NO VIGIL MASS
6:15 AM, 12:00, 6:00, & 7:30 PM - December 25: The Nativity of the Lord (Christmas)
Christmas Eve: 4:00 PM, 6:30 PM, 9:00 PM
Christmas Day: 8:00 AM, 10:00 AM, 12:00PM
Federal Holidays
2025
There will be a 9:00 AM Mass only on the following Federal Holidays:
- New Year’s Day
- Memorial Day
- Independence Day (July 4th)
- Labor Day
- Thanksgiving Day
All other Federal Holidays will follow the regular weekday Mass schedule.There will be a 9:00am Mass only on the following days:
- Day after New Year’s Day
- Easter Monday
- Day after Thanksgiving
- Day after Christmas (December 26th)
Wednesday
11:00 AM & 7:00 PM
Saturday
3:30 PM
Monday – Friday
7:00 AM – 9:00 PM

St. Timothy Parish
13807 Poplar Tree Road Chantilly, VA 20151 703 378-7461Parish Office
Monday-Friday:
8:00 AM – 4:00 PM
General Information:
703-378-7646
Emergency:
703-378-7461