My husband works a regressive schedule and finally, after 20 years, gets Sundays off. :)
Sun: off
Mon: off
Tues: 3 pm to 11pm (gets home around 11:30 b/c of commute)
Wed: 2 pm to 10 pm
Thurs: 1pm to 9 pm (or) 12noon to 8 pm
Fri: 8 am to 4 pm (or) 6:00 am to 2 pm
Sat: 7 am to 3 pm (or if the 6 am shift on Friday, then also 11pm Friday to 7 am Saturday)
It can be really hard. Sometimes I think it is getting easier for us as the kids get older and understand his work life a little more. But it is still hard, because some days he doesn't see them at all, because they are in school or gone to bed when he is home/awake and he is gone to work/asleep when they are home.
Our daily schedule is that I get up and get the kids up and get them ready for school/breakfast, drive them. I do the grocery shopping/household stuff/bills, etc... then I go get them at the end of their respective school days (not quite the same time) and bring them home or to whatever after school stuff they have (allergy appts, karate, etc). I oversee homework, get them dinner, ensure cleanliness and get them into bed each night. Then dad comes home as I am about to crawl into bed myself after taking the dog out feeding her and giving her her meds. Kids are already asleep usually...
His day: He gets up, eats something, maybe goes running, or works out, goes and does some volunteer work, or plays golf, etc.. On work days, he veg's around here or takes care of personal stuff (haircuts, etc) in the morning, or runs, whatever, until time to get showered for work. When he gets home he eats a snack before bed, watches a little TV if he still needs to wind down, or depending on which day of the week, goes straight to bed without passing "go" (his quick turnaround days).
Pretty much I deal with the house and kids. He deals with him.
It can be frustrating as the mom, too, because you feel sort of trapped in between two worlds. Two ships that pass in the night, etc... You have to really make a point to make time for each other or you'll definitely feel it in your relationship (or rather, you won't feel it... you'll just be roommates).
Good luck. It can feel very isolating when the kids are really small. Mine are 12 and 9 now, and I don't feel nearly as alone. They are actually pretty interesting growing people, and now that are like mini-adults sometimes... so we can discuss the world and news, current events, etc.. not just mind numbing story books, lol.
Hang in there. You'll be okay eventually. :)