Day Operating Hours; Sunday: 12:05 AM - 11:45 PM: Monday: 12:05 AM - 11:50 PM: Tuesday: 12:05 AM - 11:50 PM: Wednesday: 12:05 AM - 11:50 PM: Thursday: 12:05 AM - 11:50 PM: Friday: 12:05 AM - 11:45 PM: Saturday: 12:05 AM - 11:50 PM: … GREEN LINE Chicago 'L' time schedule overview for the upcoming week: Starts operating at 12:00 AM and ends at 11:45 PM. Skip to content. The green line route provides rapid transit train service between harlem in forest park il and oak park il to 63rd street on chicagos south side through downtown via the lake and wabash sides of the loop l. On weekdays and from 5 am. Home