Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 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)
 09/20/2023   08:18:40   (   0.02,-104.71) (  -0.21,-103.54)  132.25                80
 09/21/2023   20:40:35   (  -0.01,-104.68) (  -0.93,-108.85)  475.40                80
 09/22/2023   20:24:29   (  -0.01,-104.68) (   0.10,-104.32)   40.98                80
 09/25/2023   08:27:29   (  -0.02,-104.70) (   0.08,-105.05)   41.02                80
 09/26/2023   08:06:04   (  -0.01,-104.69) (  -0.95,-100.52)  475.49                80
 09/27/2023   20:27:58   (   0.01,-104.66) (  -0.23,-105.82)  132.00                80
 09/28/2023   20:11:52   (   0.00,-104.66) (   0.75,-101.28)  384.89                80
 09/30/2023   08:33:38   (  -0.00,-104.69) (   0.40,-106.55)  211.67                80
 10/01/2023   08:12:11   (   0.00,-104.69) (  -0.58,-102.01)  305.10                80
 10/02/2023   20:34:06   (  -0.01,-104.65) (  -0.59,-107.31)  302.41                80
 10/03/2023   20:17:59   (  -0.02,-104.65) (   0.40,-102.77)  214.56                80