Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 2 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)
 02/01/2021   10:17:59   (  -0.03,-137.24) (  -0.80,-133.79)  393.05                80
 02/02/2021   22:39:55   (   0.03,-137.24) (  -0.39,-139.10)  211.47                80
 02/03/2021   22:23:51   (   0.03,-137.24) (   0.64,-134.57)  304.52                80
 02/05/2021   10:45:38   (  -0.02,-137.23) (   0.57,-139.83)  297.32                80
 02/06/2021   10:24:14   (  -0.02,-137.22) (  -0.45,-135.30)  218.14                80
 02/07/2021   22:46:09   (  -0.01,-137.20) (  -0.78,-140.60)  387.37                80
 02/08/2021   22:30:04   (  -0.01,-137.19) (   0.24,-136.07)  127.63                80
 02/10/2021   10:51:52   (   0.01,-137.17) (   0.97,-141.33)  475.36                80
 02/11/2021   10:30:27   (   0.01,-137.15) (  -0.06,-136.80)   39.42                80
 02/13/2021   22:33:39   (  -0.00,-137.11) (  -0.08,-137.58)   52.77                80
 02/14/2021   22:17:34   (  -0.00,-137.10) (   0.89,-133.04)  462.06                80