You are not going to get a real answer to this question. There is no standard answer. It varies by base, unit, mission needs and manning. Sounds really harsh, but true.
I came in full qualified ICU RN. My first unit worked what they called panama - but it was too random to be panama - you should be able to predict when you'll work with panama. But I have found every unit I've been on will randomly change your shifts if you don't have a request off granted.
I've worked one month with 0 days off - but that was really situational, but they can do that.
If you are assigned to an inpatient unit - Expect 7 shifts every 2 weeks. With all those extra duties and training and PT on your own time.
If if assigned to a clinic or not 12 hour shift place - expect 10+ hour work days 5 days a week.
Also, be aware that even though you come in as a specific nurse, they will use you as they need you. even though I'm ICU, I now have a day job in an office. I'm the infection preventionist now (it's karma kicking me after all my arguments with IP in the past!). I have weekends off for the first time in over 20 years. I liked my 12 hr shifts. But now I can plan my life! I get the actual holidays off, which I'd never cared about.
I will also point out the amount of time I've spent away from "home". I got lucky and deployed within 9 months of coming in. I did COT then. another unexpected surprise of 2 day notice for a 7 week training. Then 3 weeks in CSTars. 7 months in Iraq with a month detour thru Afghanistan. Supposed to be 18 months at home before next bucket for vulnerability - I got 14 (with surgery recovery I was off the list a bit). In that 14 months I had 2 tdy training - one for 7 weeks and anothe just a week. I got tasked for 3rd deployment 2 days after I got back to leave in 9 months - my commander cared about his people and refused to let me go. Instead I sent to SOS for 7 weeks. Lol. Then I got my golden ticket and PCSd. I'm in England. No challenge clinically, but a great AF learning opportunity. But I am still off to classes. 1 month done in June, back in Texas again ironically. I have a bonus item of a tasking to Slovenia for a training mission. Then I get to go back to Baltimore for 3 weeks.
Live become an excellent packer!
too much info, I know. But it isn't just the number of shifts you work to answer your real question.