Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 19.  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   (  -0.01,-104.71) (   0.76,-108.09)  385.01                80
 09/20/2023   08:18:41   (  -0.02,-104.71) (  -0.27,-103.56)  131.21                80
 09/21/2023   20:40:35   (  -0.00,-104.68) (  -0.94,-108.85)  475.89                80
 09/22/2023   20:24:29   (   0.00,-104.67) (   0.09,-104.32)   40.43                80
 09/25/2023   08:27:29   (  -0.02,-104.69) (   0.09,-105.05)   41.57                80
 09/26/2023   08:06:04   (  -0.02,-104.69) (  -0.95,-100.52)  474.85                80
 09/27/2023   20:27:58   (   0.01,-104.65) (  -0.24,-105.82)  132.61                80
 09/28/2023   20:11:52   (   0.01,-104.65) (   0.74,-101.28)  384.25                80
 09/30/2023   08:33:38   (  -0.00,-104.68) (   0.41,-106.55)  212.43                80
 10/01/2023   08:12:11   (   0.00,-104.68) (  -0.58,-102.01)  304.30                80
 10/02/2023   20:34:06   (  -0.01,-104.65) (  -0.59,-107.31)  303.16                80