Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 1.  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)
 12/02/2022   22:32:47   (  -0.01,-137.32) (   0.20,-136.55)   89.18                80
 12/04/2022   10:47:42   (   0.01,-137.32) (   0.67,-140.14)  321.94                80
 12/05/2022   10:21:50   (   0.01,-137.32) (  -0.60,-134.53)  317.46                80
 12/06/2022   22:36:57   (  -0.01,-137.30) (  -0.22,-138.18)  100.32                80
 12/09/2022   10:28:39   (   0.02,-137.28) (  -0.23,-136.16)  127.11                80
 12/10/2022   22:43:48   (  -0.02,-137.25) (  -0.57,-139.82)  292.69                80
 12/11/2022   22:23:15   (  -0.01,-137.23) (   0.66,-134.20)  345.18                80
 12/13/2022   10:38:08   (   0.00,-137.21) (   0.15,-137.79)   66.33                80
 12/14/2022   22:53:18   (   0.00,-137.18) (  -0.97,-141.45)  487.45                80