Nothing unique about the site ... many commercial sites, esp for the cookies that appear to support advertising, cluster in the 2036-2038 time frame. Probably lazy programming. Or the usual 'if the customer doesn't like it then ...'
The cookies won't last a month using a browser that restricts the number of cookies, given the number of cookies which many sites use.
By the way, Mozilla has a preference to reject cookies that either are not for the current session or that do not expire within a configurable number of days. Nice feature!
Until Tuesday, the NSA site created two cookie files that do not
> expire until 2035 -- likely beyond the life of any computer in use > today.