Originally Posted by FLPilot3190

With just a very cursory look I came up with:

BOS 320: 02/20
BOS 220: 12/19
BOS 190: 08/21

JFK 320: 03/20
JFK 320 SQ: 11/19
JFK 190: 07/21

FLL 320: 01/20

MCO 320: 04/17
MCO 190: 03/20

LAX 320: 10/19

Obviously this is all subject to change month to month. Some of the junior lineholders in a particular base had quite a few reserve guys/gals ahead of them.