Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2019   21:59:08   (   0.28,-128.33) (   0.33,-128.20)   14.73                80
 08/08/2019   09:59:32   (  -0.29,-128.39) (  -0.19,-128.95)   62.57                80
 08/09/2019   09:43:26   (  -0.28,-128.41) (  -1.15,-124.40)  455.47                80
 08/10/2019   22:02:44   (   0.31,-128.40) (  -0.00,-129.71)  150.59                80
 08/11/2019   21:46:39   (   0.30,-128.41) (   1.01,-125.18)  367.25                80
 08/13/2019   10:05:47   (  -0.32,-128.45) (   0.13,-130.46)  228.78                80
 08/14/2019   09:49:43   (  -0.31,-128.46) (  -0.88,-125.93)  288.75                80
 08/15/2019   22:09:00   (   0.33,-128.44) (  -0.26,-131.24)  318.00                80
 08/16/2019   21:52:55   (   0.33,-128.45) (   0.69,-126.70)  199.61                80