Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 7 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/29/2021   22:24:34   (  -0.04,-137.20) (   0.52,-134.64)  292.21                80
 07/31/2021   10:46:23   (   0.04,-137.21) (   0.62,-139.92)  307.90                80
 08/01/2021   10:24:59   (   0.03,-137.21) (  -0.36,-135.38)  208.43                80
 08/02/2021   22:46:56   (  -0.03,-137.21) (  -0.83,-140.69)  396.54                80
 08/03/2021   22:30:53   (  -0.02,-137.21) (   0.22,-136.16)  119.29                80
 08/05/2021   10:52:42   (  -0.02,-137.20) (   0.92,-141.44)  482.96                80
 08/06/2021   10:31:17   (  -0.02,-137.20) (  -0.07,-136.91)   32.49                80
 08/08/2021   22:34:30   (   0.01,-137.17) (  -0.13,-137.68)   58.63                80
 08/09/2021   22:18:27   (   0.01,-137.16) (   0.91,-133.16)  456.58                80
 08/11/2021   10:40:15   (  -0.01,-137.14) (   0.28,-138.42)  145.95                80