Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/08/2020   10:24:19   (  -0.02,-137.21) (  -0.44,-135.31)  216.49                80
 04/09/2020   22:46:15   (   0.02,-137.21) (  -0.76,-140.61)  388.17                80
 04/10/2020   22:30:11   (   0.02,-137.21) (   0.25,-136.08)  128.32                80
 04/12/2020   10:51:59   (  -0.02,-137.21) (   0.89,-141.36)  471.70                80
 04/13/2020   10:30:35   (  -0.02,-137.21) (  -0.13,-136.83)   44.33                80
 04/15/2020   22:33:46   (   0.01,-137.19) (  -0.05,-137.60)   45.85                80
 04/16/2020   22:17:41   (   0.01,-137.19) (   0.91,-133.06)  470.12                80
 04/18/2020   10:39:29   (  -0.01,-137.18) (   0.23,-138.33)  130.60                80
 04/19/2020   10:18:05   (  -0.01,-137.17) (  -0.79,-133.80)  384.92                80
 04/20/2020   22:40:01   (   0.00,-137.15) (  -0.41,-139.10)  221.91                80