Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 7 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2021   22:49:13   (  -0.03,-137.18) (  -0.81,-140.63)  392.79                80
 07/02/2021   22:27:50   (  -0.02,-137.18) (   0.23,-136.11)  122.86                80
 07/04/2021   10:52:19   (   0.02,-137.17) (   0.94,-141.38)  478.90                80
 07/05/2021   10:30:55   (   0.01,-137.17) (  -0.04,-136.84)   36.20                80
 07/07/2021   22:34:09   (   0.00,-137.14) (  -0.11,-137.63)   56.14                80
 07/08/2021   22:18:05   (   0.01,-137.12) (   0.92,-133.10)  458.30                80
 07/10/2021   10:39:53   (  -0.01,-137.10) (   0.30,-138.37)  145.22                80
 07/11/2021   10:18:30   (  -0.01,-137.08) (  -0.74,-133.84)  368.92                80
 07/12/2021   22:40:27   (   0.01,-137.05) (  -0.44,-139.15)  239.36                80
 07/13/2021   22:24:23   (   0.01,-137.03) (   0.54,-134.61)  274.58                80
 07/15/2021   10:46:12   (  -0.01,-136.99) (   0.62,-139.89)  329.70                80