Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 4 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/21/2023   20:13:23   (   0.01,-104.74) (   0.81,-101.25)  397.77                80
 04/23/2023   08:35:09   (  -0.01,-104.74) (   0.40,-106.51)  202.62                80
 04/24/2023   08:13:43   (  -0.01,-104.74) (  -0.63,-101.98)  313.89                80
 04/25/2023   20:35:37   (   0.00,-104.74) (  -0.58,-107.28)  290.29                80
 04/26/2023   20:19:32   (   0.00,-104.74) (   0.45,-102.75)  226.61                80
 04/28/2023   08:41:17   (   0.00,-104.74) (   0.75,-108.01)  373.12                80
 04/29/2023   08:19:52   (  -0.00,-104.74) (  -0.29,-103.48)  143.64                80
 04/30/2023   20:41:46   (   0.00,-104.74) (  -0.91,-108.78)  460.56                80
 05/01/2023   20:25:41   (   0.00,-104.75) (   0.13,-104.26)   56.69                80
 05/04/2023   08:28:39   (  -0.00,-104.76) (   0.07,-104.98)   25.44                80