Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 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)
 04/26/2020   22:27:31   (   0.02,-137.19) (   0.26,-136.07)  127.35                80
 04/28/2020   10:51:58   (  -0.02,-137.20) (   0.93,-141.34)  471.77                80
 04/29/2020   10:30:34   (  -0.02,-137.20) (  -0.09,-136.81)   44.72                80
 05/01/2020   22:33:45   (   0.01,-137.19) (  -0.07,-137.58)   44.38                80
 05/02/2020   22:17:41   (   0.01,-137.19) (   0.96,-133.05)  471.70                80
 05/04/2020   10:39:28   (  -0.01,-137.19) (   0.24,-138.32)  128.79                80
 05/05/2020   10:18:04   (  -0.01,-137.18) (  -0.79,-133.79)  386.91                80
 05/06/2020   22:39:59   (   0.01,-137.16) (  -0.45,-139.08)  219.62                80
 05/07/2020   22:23:55   (   0.01,-137.15) (   0.58,-134.55)  295.73                80
 05/09/2020   10:45:42   (  -0.01,-137.14) (   0.61,-139.82)  305.95                80
 05/10/2020   10:24:18   (  -0.00,-137.12) (  -0.42,-135.29)  208.96                80