Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2023   10:18:29   (  -0.00,-137.32) (  -0.79,-133.79)  402.76                80
 01/11/2023   22:40:26   (   0.00,-137.31) (  -0.38,-139.10)  203.07                80
 01/12/2023   22:24:20   (   0.00,-137.31) (   0.60,-134.56)  312.46                80
 01/14/2023   10:46:08   (  -0.00,-137.29) (   0.58,-139.83)  289.89                80
 01/15/2023   10:24:43   (  -0.00,-137.28) (  -0.46,-135.31)  225.08                80
 01/16/2023   22:46:38   (   0.01,-137.26) (  -0.76,-140.61)  382.32                80
 01/17/2023   22:30:34   (   0.01,-137.24) (   0.29,-136.09)  132.05                80
 01/19/2023   10:52:20   (  -0.01,-137.21) (   0.94,-141.35)  472.15                80
 01/20/2023   10:30:56   (  -0.02,-137.18) (  -0.11,-136.82)   41.54                80
 01/22/2023   22:34:06   (   0.02,-137.12) (  -0.11,-137.59)   54.08                80