For Board Certifications: You have lifetime access to the program. However you only have 1 year to take the exam as your program came with a 1 year exam license.
For Online Courses: You have lifetime access to the programs if you paid in full for the program.
Note: If you bought a subscription, access to the programs are limited based on the duration of the subscription you paid for and are not lifetime access. To maintain access you must maintain your subscription.
For Military: You have enrollment dates listed on your invoice that you submit to CA/COOL. Those are your attendance dates.