Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 4 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2023   20:29:28   (  -0.00,-104.74) (  -0.26,-105.77)  118.70                80
 04/21/2023   20:13:22   (  -0.00,-104.75) (   0.77,-101.24)  398.76                80
 04/23/2023   08:35:09   (   0.00,-104.75) (   0.38,-106.52)  200.71                80
 04/24/2023   08:13:43   (   0.00,-104.76) (  -0.65,-101.99)  316.38                80
 04/25/2023   20:35:38   (   0.00,-104.77) (  -0.56,-107.28)  287.07                80
 04/26/2023   20:19:32   (   0.00,-104.77) (   0.47,-102.76)  230.38                80
 04/28/2023   08:41:17   (   0.00,-104.79) (   0.73,-108.02)  368.27                80
 04/29/2023   08:19:52   (   0.01,-104.79) (  -0.31,-103.49)  149.22                80
 04/30/2023   20:41:46   (  -0.01,-104.80) (  -0.88,-108.79)  454.01                80
 05/01/2023   20:25:40   (  -0.01,-104.81) (   0.11,-104.25)   63.75                80