Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/19/2023   08:40:06   (  -0.00,-104.71) (   0.78,-108.08)  384.92                80
 09/20/2023   08:18:40   (  -0.00,-104.71) (  -0.25,-103.55)  131.41                80
 09/21/2023   20:40:35   (   0.01,-104.68) (  -0.90,-108.86)  476.43                80
 09/22/2023   20:24:29   (   0.01,-104.67) (   0.07,-104.32)   39.86                80
 09/25/2023   08:27:30   (  -0.02,-104.69) (   0.05,-105.06)   41.97                80
 09/26/2023   08:06:03   (  -0.02,-104.68) (  -0.93,-100.52)  474.22                80
 09/27/2023   20:27:58   (   0.02,-104.65) (  -0.26,-105.82)  133.41                80
 09/28/2023   20:11:52   (   0.01,-104.65) (   0.78,-101.29)  383.35                80
 09/30/2023   08:33:38   (  -0.01,-104.68) (   0.43,-106.55)  213.58                80
 10/01/2023   08:12:12   (  -0.01,-104.67) (  -0.61,-102.02)  302.96                80