Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 8 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2018   22:40:17   (   0.30,-135.40) (  -0.48,-139.00)  409.81                80
 08/06/2018   22:24:13   (   0.29,-135.38) (   0.50,-134.46)  104.51                80
 08/09/2018   10:27:18   (  -0.31,-135.28) (  -0.35,-135.21)    9.62                80
 08/11/2018   22:27:51   (   0.32,-135.25) (   0.13,-135.97)   83.31                80
 08/12/2018   22:11:47   (   0.31,-135.22) (   1.17,-131.45)  430.30                80
 08/14/2018   10:30:55   (  -0.33,-135.15) (   0.03,-136.72)  178.98                80
 08/15/2018   10:14:51   (  -0.32,-135.12) (  -0.96,-132.18)  334.22                80
 08/16/2018   22:34:09   (   0.34,-135.10) (  -0.18,-137.50)  272.78                80
 08/17/2018   22:18:05   (   0.34,-135.07) (   0.81,-132.97)  240.32                80