Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2023   10:18:28   (  -0.01,-136.92) (  -0.73,-133.77)  358.97                80
 01/11/2023   22:40:24   (   0.01,-136.90) (  -0.50,-139.07)  248.44                80
 01/12/2023   22:24:19   (   0.02,-136.89) (   0.54,-134.55)  266.99                80
 01/14/2023   10:46:07   (  -0.02,-136.89) (   0.64,-139.82)  334.16                80
 01/15/2023   10:24:42   (  -0.02,-136.87) (  -0.40,-135.30)  180.74                80
 01/16/2023   22:46:37   (   0.02,-136.84) (  -0.81,-140.60)  428.25                80
 01/17/2023   22:30:32   (   0.03,-136.82) (   0.17,-136.06)   86.08                80
 01/20/2023   10:33:35   (  -0.04,-136.78) (  -0.05,-136.81)    3.92                80
 01/22/2023   22:34:05   (   0.04,-136.69) (  -0.16,-137.58)  100.74                80