Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/10/2023   08:06:20   (  -0.01,-104.70) (  -0.93,-100.55)  473.04                80
 09/11/2023   20:28:16   (   0.01,-104.69) (  -0.25,-105.86)  133.03                80
 09/12/2023   20:12:10   (   0.00,-104.69) (   0.77,-101.32)  383.82                80
 09/14/2023   08:33:56   (  -0.00,-104.71) (   0.41,-106.59)  214.18                80
 09/15/2023   08:12:31   (  -0.00,-104.71) (  -0.61,-102.06)  302.53                80
 09/16/2023   20:34:25   (   0.00,-104.69) (  -0.61,-107.35)  303.59                80
 09/17/2023   20:18:20   (   0.00,-104.70) (   0.42,-102.82)  213.37                80
 09/19/2023   08:40:06   (  -0.00,-104.72) (   0.75,-108.09)  384.32                80
 09/20/2023   08:18:41   (  -0.00,-104.72) (  -0.27,-103.56)  132.11                80
 09/21/2023   20:40:35   (   0.00,-104.69) (  -0.93,-108.86)  475.12                80
 09/22/2023   20:24:29   (   0.01,-104.69) (   0.10,-104.33)   41.29                80