[chaindelay] 'last edit 2023-03-15 '(utc means chain following UTC instead of Loran time, discontinuous on leap seconds) 'GRI ms 'since 6731=-.162 '220623 8000=113 '170101 (utc) 8830=25.5 '220308 -5 us/month +2e-12 9930=0 '210819 7950=122 '170101 (utc) 5990=38 '181130 '5990=10.8 '230313-15 5960=53.8 '170101 (utc) 6000=0 '170101 (utc)