Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/10/2019   22:02:44   (   0.30,-128.39) (   0.03,-129.72)  151.50                80
 08/11/2019   21:46:40   (   0.30,-128.40) (   1.04,-125.19)  366.05                80
 08/13/2019   10:05:48   (  -0.32,-128.44) (   0.10,-130.46)  230.14                80
 08/14/2019   09:49:42   (  -0.31,-128.44) (  -0.85,-125.92)  287.08                80
 08/15/2019   22:09:00   (   0.33,-128.42) (  -0.30,-131.23)  320.58                80
 08/16/2019   21:52:55   (   0.33,-128.43) (   0.72,-126.70)  196.69                80
 08/18/2019   10:12:04   (  -0.34,-128.47) (   0.43,-131.97)  399.44                80
 08/19/2019   09:55:59   (  -0.34,-128.47) (  -0.59,-127.44)  117.47                80
 08/20/2019   22:15:15   (   0.35,-128.44) (  -0.62,-132.74)  491.05                80
 08/21/2019   21:59:11   (   0.34,-128.44) (   0.40,-128.21)   25.63                80
 08/24/2019   09:59:35   (  -0.36,-128.47) (  -0.27,-128.96)   55.29                80