Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 8 6.  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)
 08/06/2023   08:37:17   (   0.01,-104.73) (   0.77,-107.97)  370.90                80
 08/07/2023   08:15:52   (   0.01,-104.73) (  -0.27,-103.44)  145.90                80
 08/08/2023   20:37:46   (  -0.01,-104.70) (  -0.92,-108.74)  460.29                80
 08/09/2023   20:21:40   (  -0.01,-104.71) (   0.13,-104.21)   56.87                80
 08/12/2023   08:24:40   (   0.02,-104.73) (   0.04,-104.94)   23.51                80
 08/13/2023   08:03:14   (   0.02,-104.73) (  -0.95,-100.40)  493.48                80
 08/14/2023   20:25:08   (  -0.03,-104.70) (  -0.22,-105.70)  112.76                80
 08/15/2023   20:09:02   (  -0.03,-104.71) (   0.77,-101.16)  404.56                80
 08/17/2023   08:30:47   (   0.03,-104.74) (   0.43,-106.42)  191.55                80
 08/18/2023   08:09:21   (   0.03,-104.74) (  -0.62,-101.89)  325.58                80
 08/19/2023   20:31:15   (  -0.03,-104.72) (  -0.59,-107.18)  280.59                80