Method: MkTime::Compute.calc_dt_before_2005

Defined in:
lib/mk_time/compute.rb

.calc_dt_before_2005(y) ⇒ Object

deltaT (1986 <= year && year < 2005)

@param: y (Year coefficient for deltaT calculation) @return: dt (sec)



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# File 'lib/mk_time/compute.rb', line 406

def calc_dt_before_2005(y)
  t = y - 2000
  dt  = 63.86         + \
       ( 0.3345       + \
       (-0.060374     + \
       ( 0.0017275    + \
       ( 0.000651814  + \
       ( 0.00002373599) \
       * t) * t) * t) * t) * t
  return dt
rescue => e
  raise
end