Three weeks for me. Indoc 4/28 thru 5/9 and currently in Sovereign school (started 6/1). Varies by fleet. Sim availability seems to be the driving force. As stated above, Linda had both dates when she called. Rumor only, some fleets are short of IOE Captains. This makes that a big variable. You get payed from 0800 on the first day of Indoc so enjoy the time off.