sidereal

-record(date_time, {
    year :: integer(),
    month :: integer(),
    day :: integer(),
    hour :: integer(),
    minute :: integer(),
    second :: integer(),
    time_zone :: binary(),
    zone_abbr :: binary(),
    utc_offset :: integer(),
    std_offset :: integer(),
    microsecond :: {integer(), integer()},
    calendar :: binary()
}).