Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/08/2019   09:59:32   (  -0.29,-128.39) (  -0.19,-128.95)   62.50                80
 08/09/2019   09:43:27   (  -0.28,-128.40) (  -1.20,-124.41)  455.45                80
 08/10/2019   22:02:43   (   0.30,-128.39) (  -0.01,-129.71)  150.92                80
 08/11/2019   21:46:39   (   0.30,-128.40) (   1.00,-125.18)  366.89                80
 08/13/2019   10:05:47   (  -0.32,-128.45) (   0.14,-130.46)  228.99                80
 08/14/2019   09:49:43   (  -0.31,-128.46) (  -0.87,-125.93)  288.50                80
 08/15/2019   22:09:00   (   0.33,-128.44) (  -0.28,-131.24)  318.58                80
 08/16/2019   21:52:56   (   0.33,-128.45) (   0.74,-126.71)  198.97                80
 08/18/2019   10:12:04   (  -0.34,-128.49) (   0.41,-131.98)  396.98                80
 08/19/2019   09:55:58   (  -0.34,-128.50) (  -0.55,-127.44)  120.25                80