Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 8 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/27/2021   10:40:23   (   0.05,-137.20) (   0.30,-138.43)  139.48                80
 08/28/2021   10:18:59   (   0.05,-137.20) (  -0.69,-133.90)  376.50                80
 08/29/2021   22:40:56   (  -0.04,-137.19) (  -0.49,-139.20)  228.98                80
 08/30/2021   22:24:52   (  -0.04,-137.19) (   0.50,-134.67)  286.54                80
 09/01/2021   10:46:40   (   0.04,-137.17) (   0.68,-139.94)  315.71                80
 09/02/2021   10:25:16   (   0.03,-137.16) (  -0.38,-135.42)  199.25                80
 09/03/2021   22:47:14   (  -0.02,-137.14) (  -0.80,-140.72)  407.96                80
 09/04/2021   22:31:09   (  -0.01,-137.13) (   0.19,-136.19)  106.61                80
 09/06/2021   10:50:18   (   0.00,-137.10) (   0.99,-141.46)  496.70                80
 09/07/2021   10:31:33   (   0.00,-137.09) (  -0.01,-136.93)   17.86                80