"The Insider" has an exclusive account of Lindsay Lohan's rehab stay and hour-to-hour schedule from a fellow patient who just completed treatment at the Cirque Lodge in Utah.

JANE P., who left the center on Tuesday, tells "The Insider" that she believes Lindsay checked into the center last Thursday night -- and that her arrival and stay has been disruptive to other men and women in the program.

LINDSAY'S DAILY SCHEDULE, PER JANE P., IS:

6 A.M. Wake up call

6:30 A.M. River hike, followed by a brief meditation

8:00 A.M. Breakfast is served

8:30 A.M. Free time -- like other residents, Lindsay is assigned cleaning duties -- including cleaning her room and her toilet.

9:00 A.M. Community meeting to discuss what will go on that day.

10:00 A.M. Speaker meeting

12:00 P.M. Lunch is served

1:00 P.M. - 4:00 P.M. Process group/workshops/experiential time -- where patients participate in any of the following activities including horseback riding or gardening -- which Lindsay did on Tuesday. Spa treatments like massages and pedicures are also available from estheticians-in-training.

5:30 P.M. Dinner time

6:30 P.M. Assignment group/recovery work

8:00 P.M. 12-Step meeting (on or off-site)

9:30 P.M. Closing meeting -- assessment of the day

10:00 P.M. - 11:00 P.M. Free time

11:00 P.M. Lights out