Somewhat off-topic, but on https://trello.com/enterprise, you say that you provide "24 x 7 x 365 incidence response" where I think you mean "24 x 7 x 365 incident response".
Since a business closing does not typically occur in week-long increments, probably not. "24 x 7 x 364" is generally understood to mean one day off a year (usually Christmas Day in the US), and "24 x 7 x 51" would not be clear at all.