Converts a time represented in epoch time to %{month, day, hour, minute, second} format.

This format comes from the two line element(TLE) set format, which provides a reference for all other time-based fields in the data.

See the following for a detailed explanation: https://celestrak.com/columns/v04n03/#FAQ02

Examples

  iex> Satellite.Dates.epoch_time_to_mdhms(131, 349.872256942)
  %{day: 15, hr: 20, minute: 56, mon: 12, second: 2.9997887981517124}

Converts a gregorian date to julian date

Examples

  iex> Satellite.Dates.jday({{2016, 8, 6}, {17, 35, 12}})
  2457607.2327777776

Converts a julian date to greenwich mean sidereal time (GMST)

Examples

  iex> jd = Satellite.Dates.jday({{2016, 8, 6}, {17, 35, 12}})
  iex> Satellite.Dates.julian_to_gmst(jd)
  3.8307254407191067

Converts a datetime to greenwich mean sidereal time