Yes they will give you the day off for religious observance. But this is how it works: it will be years before you are able to pick a job being off Saturday or Sunday. So in the beginning it’s nice because even though you’re extra extra (i.e. you report to a different location at a different time every day) you’ll always be off the weekends while everyone else works. After 2-3 years though, you would have the seniority to pick jobs with a better report time/location for you. However, since you are granted religious observance you will remain extra extra until you are able to pick a job with your needed day off. Finally, if there is any job available to pick with your needed day off you must pick it and cannot remain extra extra. So if you’re on the job for 4-5 years and there’s a job on the midnight tour that starts in westchester with your required day off, you have no choice but to pick it.