Ranger Reserve Monthly Meeting Ranger Reserve Monthly Meeting – Mandatory. Activity Details Date: Wednesday, January 18, 2017 Time: 6:30 pm - 8:30 pm Duration (hours:minutes): 2:00 Type: Stewardship Organization: OC Parks Area: Irvine Ranch Historical Park Staging Area: Irvine Ranch Historical Park Difficulty: 1 Minimum Age: 18 Email Activity to Friend Registration is closed for this activity..