Not to beat us to death, but as an intellectual exercise, the formula could be improved by having a look up table to adjust the constant in the formula of 54 to be the number 45 where the latitude of the Base was up at the 49th parallel in the north near Canada (yes we are still a separate country up here and not yet the 51st state), and would be adjusted to a value of 60 for a Base down in the south near New Orleans, home of 2025 EMPOWER. Obviously the table could be loaded with say 100 values representing the range of latitudes in the USA.
Chat GPT is useful for doing the legwork on these values.