Delta-T

The Delta-T end point obtains an estimated Delta-T value in seconds for the given date.

The returned values are from the following sources:

• Up to year 2004: Meeus, Astronomical Algorithms, 2nd Ed. p.79 Table 10.A.

• 2006 - 2024: source

• 2024 - 2034: source

• After 2034: we implement these expressions

For further context, see Delta T.

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