palDtt palDtt - Return offset between UTC and TT

Description:
Increment to be applied to Coordinated Universal Time UTC to give International Atomic Time (TAI).

Invocation:
dat = palDat( double utc );

Arguments:

utc = double (Given)
UTC date as a modified JD (JD-2400000.5)

Returned Value:

dat = double
TAI-UTC in seconds

Notes: