Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 8 27.  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,-134.66) (   0.09,-135.98)  150.66                80
 08/28/2018   22:11:55   (   0.38,-134.62) (   1.08,-131.45)  360.70                80
 08/30/2018   10:31:04   (  -0.39,-134.52) (   0.12,-136.71)  250.56                80
 08/31/2018   10:15:00   (  -0.39,-134.47) (  -0.92,-132.19)  260.08                80
 09/01/2018   22:34:16   (   0.40,-134.40) (  -0.31,-137.49)  352.04                80
 09/02/2018   22:18:13   (   0.40,-134.35) (   0.74,-132.96)  158.28                80
 09/04/2018   10:40:01   (  -0.41,-134.24) (   0.47,-138.23)  454.03                80
 09/05/2018   10:18:37   (  -0.41,-134.18) (  -0.52,-133.70)   55.36                80
 09/07/2018   22:21:49   (   0.42,-134.03) (   0.29,-134.46)   49.44                80
 09/08/2018   22:05:45   (   0.42,-133.97) (   1.34,-129.93)  460.07                80
 09/10/2018   10:27:34   (  -0.42,-133.86) (  -0.14,-135.20)  152.73                80