Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2020   10:45:43   (  -0.02,-137.20) (   0.60,-139.83)  300.72                80
 04/24/2020   10:24:19   (  -0.02,-137.20) (  -0.43,-135.30)  215.43                80
 04/25/2020   22:46:15   (   0.02,-137.19) (  -0.77,-140.60)  389.91                80
 04/26/2020   22:30:11   (   0.02,-137.18) (   0.26,-136.07)  125.79                80
 04/28/2020   10:51:58   (  -0.01,-137.17) (   0.94,-141.34)  475.87                80
 04/29/2020   10:30:34   (  -0.01,-137.15) (  -0.09,-136.81)   39.21                80
 05/01/2020   22:33:45   (   0.01,-137.11) (  -0.08,-137.58)   52.99                80
 05/02/2020   22:17:40   (   0.01,-137.10) (   0.89,-133.04)  461.75                80
 05/04/2020   10:39:28   (  -0.00,-137.07) (   0.25,-138.32)  141.30                80
 05/05/2020   10:18:03   (  -0.00,-137.05) (  -0.72,-133.77)  373.02                80
 05/06/2020   22:39:59   (   0.00,-137.02) (  -0.47,-139.08)  235.24                80