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   09:59:31   (  -0.29,-128.39) (  -0.14,-128.93)   62.63                80
 08/09/2019   09:43:26   (  -0.28,-128.40) (  -1.15,-124.40)  455.33                80
 08/10/2019   22:02:44   (   0.30,-128.39) (  -0.00,-129.71)  151.10                80
 08/11/2019   21:46:39   (   0.30,-128.40) (   1.01,-125.18)  366.67                80
 08/13/2019   10:05:47   (  -0.32,-128.45) (   0.14,-130.46)  229.23                80
 08/14/2019   09:49:43   (  -0.31,-128.46) (  -0.88,-125.93)  288.21                80
 08/15/2019   22:09:00   (   0.33,-128.44) (  -0.27,-131.24)  318.94                80
 08/16/2019   21:52:55   (   0.33,-128.44) (   0.69,-126.70)  198.60                80
 08/18/2019   10:12:03   (  -0.34,-128.49) (   0.46,-131.97)  397.37                80
 08/19/2019   09:55:59   (  -0.34,-128.49) (  -0.56,-127.44)  119.80                80