Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/28/2019   22:46:54   (   0.03,-137.20) (  -0.72,-140.66)  393.69                80
 07/29/2019   22:30:49   (   0.03,-137.20) (   0.29,-136.13)  122.27                80
 07/31/2019   10:52:36   (  -0.04,-137.19) (   0.92,-141.39)  479.00                80
 08/01/2019   10:31:12   (  -0.04,-137.18) (  -0.09,-136.86)   36.58                80
 08/03/2019   22:34:25   (   0.05,-137.16) (  -0.05,-137.64)   54.63                80
 08/04/2019   22:18:20   (   0.05,-137.14) (   0.96,-133.10)  460.67                80
 08/06/2019   10:37:28   (  -0.05,-137.13) (   0.25,-138.37)  141.45                80
 08/07/2019   10:21:23   (  -0.05,-137.12) (  -0.76,-133.83)  373.51                80
 08/08/2019   22:40:40   (   0.05,-137.09) (  -0.39,-139.15)  234.05                80
 08/09/2019   22:24:36   (   0.06,-137.07) (   0.62,-134.61)  280.52                80
 08/11/2019   10:43:43   (  -0.06,-137.05) (   0.59,-139.88)  322.72                80