I was born in [month, year]. My children were born in [month, year] and [month, year]. My coverage is [employer plan / marketplace plan / Medicaid / Medicare], and the plan year starts in [month]. Put on my calendar, with a reminder a month ahead, every date on which our coverage is expected to change: each open-enrollment window; the day my plan's deductible and out-of-pocket maximum reset; each child's twenty-sixth birthday and the sixty-day window after it to enrol elsewhere; the change in what I can see in each child's patient portal around age twelve or thirteen, and the forms each child should sign at eighteen; my Medicare initial enrollment period, which opens three months before the month I turn sixty-five; if I have a health savings account, a reminder to stop contributions before I enrol in Medicare; the six months after my Medicare Part B starts, when a supplement can't turn me down; and Medicare's open enrollment each fall. Tell me which dates you assumed and which I should confirm.