Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 8 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/27/2018   22:28:00   (   0.39,-134.67) (   0.07,-135.98)  150.16                80
 08/28/2018   22:11:55   (   0.38,-134.62) (   1.06,-131.45)  361.27                80
 08/30/2018   10:33:44   (  -0.39,-134.52) (   0.08,-136.72)  250.62                80
 08/31/2018   10:15:00   (  -0.39,-134.47) (  -0.91,-132.19)  260.02                80
 09/01/2018   22:34:17   (   0.40,-134.41) (  -0.27,-137.50)  351.36                80
 09/02/2018   22:18:13   (   0.40,-134.35) (   0.72,-132.96)  158.99                80
 09/04/2018   10:40:01   (  -0.41,-134.24) (   0.48,-138.23)  453.88                80
 09/05/2018   10:18:37   (  -0.41,-134.18) (  -0.51,-133.69)   55.52                80
 09/07/2018   22:21:49   (   0.42,-134.04) (   0.33,-134.47)   48.46                80
 09/08/2018   22:05:45   (   0.41,-133.98) (   1.32,-129.93)  460.99                80