def convert_longitude_to_matrix_idx(longitude: int) -> int:
  """
  Purpose: Some HDFs have data stored in a 3600 x 7200 matrix. As a result,
  you need the longitude to be converted into an index value. This is more
  efficient than converting every index in the matrix to determine if it
  in the bounding box.

  Input: longitude - The longitude to convert

  Output: The corresponding index of the matrix
  """
  return int((longitude + 180)/.05)