Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 6 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/06/2021   22:15:00   (  -0.00,-137.18) (   0.92,-133.03)  472.73                80
 06/08/2021   10:39:28   (   0.00,-137.16) (   0.29,-138.29)  129.82                80
 06/09/2021   10:18:04   (  -0.00,-137.15) (  -0.76,-133.77)  385.00                80
 06/10/2021   22:42:42   (   0.00,-137.13) (  -0.43,-139.08)  221.82                80
 06/11/2021   22:23:57   (   0.01,-137.11) (   0.56,-134.54)  292.58                80
 06/13/2021   10:45:47   (  -0.01,-137.09) (   0.59,-139.82)  311.39                80
 06/14/2021   10:24:22   (  -0.01,-137.07) (  -0.39,-135.29)  202.58                80
 06/15/2021   22:46:19   (   0.01,-137.03) (  -0.78,-140.59)  405.49                80
 06/16/2021   22:30:15   (   0.01,-137.01) (   0.20,-136.06)  108.31                80
 06/18/2021   10:52:04   (  -0.00,-136.97) (   0.95,-141.34)  496.50                80
 06/19/2021   10:30:40   (  -0.00,-136.95) (  -0.04,-136.80)   16.86                80