Method deltaT

base/src/main/java/net/time4j/scale/TimeScale.java:354–366

(
        int year,
        int month
    )

     * @since   3.33/4.28
     */
    public static double deltaT(
        int year,
        int month
    ) {

        if ((month < 1) || (month > 12)) {
            throw new IllegalArgumentException("Month out of range: " + month);
        }

        double y = year + (month - 0.5) / 12;
        return deltaT(year, y);

    }

    /**
     * <p>Estimates the delta between TT and UT1 in decimal seconds depending on given date. </p>