St. Sebastian Catholic Church at 9408 Wilson Ave., Byron Center, MI 49315 US - Mass Times and Schedules
| Office Hours | |
| Monday: | 8:30am to 12:30pm |
| Tuesday: | 8:30am to 12:30pm |
| Wednesday: | 8:30am to 12:30pm |
| Thursday: | 8:30am to 12:30pm |
| Friday: | 8:30am to 12:00pm |
| Mass Schedule | |
| Sunday: | 8:30am and 11:15am |
| Monday: | No Mass - No Service |
| Tuesday: | Check Weekly Bulletin |
| Wednesday: | Check Weekly Bulletin |
| Thursday: | Check Weekly Bulletin |
| Friday: | Check Weekly Bulletin |
| Saturday: | 5:00pm |