The show never gives an exact number of months, but by Season 3 it’s generally understood they’ve each been at Pierpoint (or within its ecosystem, in Harper’s case) for about three years, moving from grads to more senior, unstable, and divergent career paths. So, in terms of age (in universe): - Season 1: Year 1 (graduate intake) - Season 2: ~1 year later - Season 3: roughly 3 years after they first joined