I agree with some of the posters here, who say Confession is not offered enough . Many people work on Saturday.
As someone who works the night shift I find it difficult to go to my employer to ask for time off to go to confession. Consequently I usually go when I am on vacation.
As someone who also works at night I truly understand your difficulty (I am on vacation now so I am up today). I am blessed that my shift starts at 6:30pm and ends at 7:00 (we rotate during the week so I work every day of the week in a 6 week period). This allows some planning to get up by 3:30 on Saturday to make it to church by 4:15 to 4:30.
May I also suggest asking your parish if they would do a confession after a daily mass, once or twice a week, or even once or twice a month? After the 7:15 mass on Wednesday and Thursday, in my parish, Father will hear confession. Some parishes have confession on the Thursday before a first Friday. To find if a church in your area is offering the Sacrament at a time more convenient to you check
Mass Times put in your zip code (or the zip code of work - which I find much easier) and check for the churches and shrines near you - they list both confession and adoration, as well as masses.
I have found such strength and help in confession that I want others to avail themselves of it as often as needed. I have rambled on long enough so I'll stop.
It can also be useful calling one's pastor. Mine, for instance, will really and truly always make time to hear confessions for those in need. If you have a weird schedule, perhaps your pastor will set up a standing appointment with you.