Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 2 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/03/2021   22:23:51   (   0.04,-137.25) (   0.66,-134.57)  305.34                80
 02/05/2021   10:45:38   (  -0.03,-137.24) (   0.55,-139.84)  296.01                80
 02/06/2021   10:24:14   (  -0.03,-137.24) (  -0.47,-135.31)  220.06                80
 02/07/2021   22:46:10   (   0.02,-137.23) (  -0.70,-140.61)  384.49                80
 02/08/2021   22:30:05   (  -0.00,-137.23) (   0.26,-136.07)  131.91                80
 02/10/2021   10:51:52   (   0.01,-137.21) (   0.95,-141.34)  470.30                80
 02/11/2021   10:30:28   (   0.01,-137.20) (  -0.08,-136.81)   45.09                80
 02/13/2021   22:33:38   (  -0.01,-137.19) (  -0.12,-137.57)   44.96                80
 02/14/2021   22:17:34   (  -0.00,-137.18) (   0.91,-133.05)  470.54                80
 02/16/2021   10:39:22   (   0.00,-137.16) (   0.24,-138.32)  132.31                80