Season 1 Progression

1x1- First day as rookies. Nolan has been in LA for 6-9 months. Nolan is 45. Nolan and Lucy have been dating for 2 months

1x4- Nolan breaks up with Lucy

1x5- Lucy is mentioned to be 28. Nolan Lucy age gap is 17 years

1x7- 2 months into the FTO program

1x9- Nolan says Henry is 18*

1x10- 3 months into the FTO program. Angela meets Wesley

1x11- Ben says Henry is 18*. 4 months into the FTO program. ALSO I think this is when Tim and Lucy's relationship moves into friendship and Tim's caring side is seen.

1x12- Valentines Day! Nolan says "Training officers 10 years my junior" though he says it like an approximate, it makes sense that the TO's are about 33-36

1x13- 100 shifts (since it has definitely been 4+ months (120+ days) I guess the rookies did get quite a few off days)

1x17- Captain Andersen's grave reads Feb 1 1981 - March 19 2019 making her 38 at the time of her death. The TO's are definitely a couple of years younger than her (33-36)

1x20- 6 months into the FTO program

*With the details we get in Season 2, Henry should be 19