I'm a contractor, so I work whenever the job requires. If we do retail spaces, it has to be overnight when they are closed. Commercial/industrial work is whatever accommodates their schedule. Residential work is whenever is convenient for the homeowner. Some jobs are even kind of "whenever you want to show up" as long as it is completed by XX date.
I am surprised that you would want to move to 1st shift (don't know what you do or family status), but up here in the "rust belt", all of the manufacturing and warehousing jobs that still run 2 or 3 shifts pay a premium wage for 2nd and 3rd shift, and a lot of people want those extra few bucks.