A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Sean C
Date: 2021 Nov 15, 14:45 -0800
"Sometimes developers of tools and apps for celestial navigation will try to impress by listing delta-T to the nearest hundredth of a second or even more."
... Or maybe they just didn't bother to round the values given by the IERS and NASA. ;)