depends on fleet and domicile.

worst case/new hire is short blocks of night-time reserve (midnight-noon) with half the month off (work 14 out of 28 days); or Base Trip Lines, which are short trips, multiple commutes, working 15-17 out of 28 days.

After 2 years, hold something more commutable and some day flying. hopefully a line with (working) 14-15 days out of 28

after 5-7 years hopefully hold a line with (working) 12-13 days out of 28 (even more commutable), or 2 blocks of reserve , or all day flying.

if you live in domicile your relative seniority increases exponentially.

someone else can address the international fleet as I am domestic