Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/23/2020   10:24:17   (  -0.00,-137.20) (  -0.45,-135.31)  216.82                80
 03/24/2020   22:46:14   (   0.00,-137.21) (  -0.76,-140.61)  386.74                80
 03/25/2020   22:30:09   (   0.00,-137.22) (   0.26,-136.08)  130.39                80
 03/27/2020   10:51:58   (  -0.00,-137.23) (   0.90,-141.35)  468.79                80
 03/28/2020   10:30:33   (  -0.00,-137.24) (  -0.12,-136.82)   47.80                80
 03/30/2020   22:33:45   (   0.00,-137.23) (  -0.08,-137.59)   41.33                80
 03/31/2020   22:17:40   (  -0.00,-137.22) (   0.94,-133.06)  474.56                80
 04/02/2020   10:39:28   (  -0.00,-137.22) (   0.27,-138.32)  126.59                80
 04/03/2020   10:18:03   (  -0.00,-137.21) (  -0.74,-133.79)  388.72                80
 04/04/2020   22:40:01   (   0.00,-137.19) (  -0.40,-139.11)  218.38                80