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    Re: DIY Tables?
    From: Greg Rudzinski
    Date: 2015 Aug 29, 09:37 -0700

    Herman,

    Here is the up dated correction to Table 4  a corr.

    Herman,

    Good catch for February 2020. Add 20 hours following leap day. All I did was to extrapolate forward then do a check against USNO to confirm correction. This table doesn't need to be perfect. rounding to the nearest hour is good enough. You will see that there is 25 hours difference between 1988/1992, 2000/2004,2008/2012. I'm not sure what the rule is for this so I just work up a sight for the future date in question to make sure results are close.

    Greg Rudzinski

    From: Herman Dekker
    Date: 2015 Aug 28, 06:29 -0700

    Hello Greg,

    I see the extended Table 4 Year correction, the correcxtion is to year 2028.

    I understand is that in a year when februar has 29 days after the 29 you have to use the * correction.

    In your handwritten correction after the 29 it is 25 hours more. In the original table from 1981 until 2016 it is

    always 24 hours more. Can you explain??

    NB. the correction for 2020 after 29 februar is missing, I suppose it must be +20* (or +19*???)

    Regards,

    Herman Dekker



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