Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 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)
 07/23/2019   22:40:38   (   0.02,-137.20) (  -0.39,-139.15)  221.65                80
 07/24/2019   22:24:33   (   0.02,-137.20) (   0.62,-134.62)  294.77                80
 07/26/2019   10:46:21   (  -0.03,-137.20) (   0.59,-139.88)  305.42                80
 07/27/2019   10:24:56   (  -0.03,-137.20) (  -0.42,-135.35)  210.34                80
 07/28/2019   22:46:53   (   0.04,-137.17) (  -0.74,-140.66)  396.69                80
 07/29/2019   22:30:49   (   0.04,-137.16) (   0.28,-136.13)  118.54                80
 07/31/2019   10:49:56   (  -0.04,-137.15) (   0.93,-141.39)  483.24                80
 08/01/2019   10:31:12   (  -0.04,-137.14) (  -0.08,-136.86)   31.62                80
 08/03/2019   22:34:25   (   0.05,-137.09) (  -0.06,-137.64)   62.38                80
 08/04/2019   22:18:20   (   0.04,-137.07) (   0.96,-133.11)  452.23                80
 08/06/2019   10:37:27   (  -0.05,-137.05) (   0.25,-138.37)  150.40                80