Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/16/2023   20:34:26   (  -0.01,-104.68) (  -0.59,-107.36)  304.15                80
 09/17/2023   20:18:20   (  -0.01,-104.68) (   0.43,-102.82)  212.64                80
 09/19/2023   08:40:06   (   0.01,-104.71) (   0.74,-108.09)  384.92                80
 09/20/2023   08:18:40   (   0.01,-104.71) (  -0.23,-103.55)  131.36                80
 09/21/2023   20:40:35   (  -0.01,-104.67) (  -0.92,-108.86)  476.37                80
 09/22/2023   20:24:29   (  -0.01,-104.67) (   0.05,-104.31)   39.95                80
 09/25/2023   08:27:30   (   0.01,-104.68) (   0.08,-105.05)   41.87                80
 09/26/2023   08:06:03   (   0.02,-104.68) (  -0.89,-100.51)  474.23                80
 09/27/2023   20:27:57   (  -0.02,-104.64) (  -0.30,-105.81)  133.47                80
 09/28/2023   20:11:52   (  -0.02,-104.64) (   0.74,-101.28)  383.11                80