Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/12/2023   20:12:10   (   0.01,-104.69) (   0.74,-101.32)  383.72                80
 09/14/2023   08:33:56   (  -0.01,-104.71) (   0.44,-106.58)  214.33                80
 09/15/2023   08:12:31   (  -0.00,-104.71) (  -0.58,-102.05)  302.38                80
 09/16/2023   20:34:26   (   0.00,-104.69) (  -0.58,-107.36)  303.79                80
 09/17/2023   20:18:20   (   0.00,-104.69) (   0.45,-102.83)  213.17                80
 09/19/2023   08:40:07   (  -0.01,-104.72) (   0.72,-108.10)  384.63                80
 09/20/2023   08:18:40   (  -0.01,-104.71) (  -0.24,-103.55)  131.78                80
 09/21/2023   20:40:35   (   0.01,-104.69) (  -0.90,-108.86)  475.64                80
 09/22/2023   20:24:29   (   0.02,-104.68) (   0.07,-104.32)   40.80                80
 09/25/2023   08:27:30   (  -0.02,-104.70) (   0.06,-105.06)   41.23                80