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   22:40:37   (   0.02,-137.20) (  -0.43,-139.14)  221.82                80
 07/24/2019   22:24:33   (   0.02,-137.20) (   0.59,-134.61)  294.56                80
 07/26/2019   10:46:21   (  -0.03,-137.20) (   0.57,-139.88)  305.58                80
 07/27/2019   10:24:56   (  -0.03,-137.19) (  -0.44,-135.35)  210.11                80
 07/28/2019   22:46:53   (   0.04,-137.17) (  -0.77,-140.65)  397.11                80
 07/29/2019   22:30:48   (   0.04,-137.16) (   0.24,-136.12)  118.13                80
 07/31/2019   10:49:57   (  -0.04,-137.15) (   0.91,-141.39)  483.62                80
 08/01/2019   10:33:52   (  -0.04,-137.13) (  -0.10,-136.86)   31.04                80
 08/03/2019   22:34:24   (   0.05,-137.08) (  -0.10,-137.63)   63.09                80
 08/04/2019   22:18:19   (   0.04,-137.06) (   0.92,-133.10)  451.48                80