Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 7 29.  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)
 07/29/2023   20:25:29   (  -0.01,-104.70) (  -0.22,-105.77)  120.40                80
 07/30/2023   20:09:22   (  -0.01,-104.70) (   0.75,-101.22)  396.40                80
 08/01/2023   08:31:08   (   0.02,-104.72) (   0.42,-106.49)  201.22                80
 08/02/2023   08:09:43   (   0.02,-104.72) (  -0.61,-101.96)  315.22                80
 08/03/2023   20:31:37   (  -0.02,-104.69) (  -0.58,-107.25)  291.61                80
 08/04/2023   20:15:32   (  -0.02,-104.69) (   0.45,-102.72)  225.45                80
 08/06/2023   08:37:17   (   0.02,-104.73) (   0.77,-107.98)  370.98                80
 08/07/2023   08:15:52   (   0.02,-104.73) (  -0.26,-103.45)  145.83                80
 08/08/2023   20:37:46   (  -0.03,-104.70) (  -0.92,-108.74)  461.14                80
 08/09/2023   20:21:39   (  -0.03,-104.70) (   0.06,-104.20)   56.04                80
 08/12/2023   08:24:40   (   0.04,-104.73) (   0.06,-104.94)   23.22                80