Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/03/2019   09:55:54   (  -0.27,-128.31) (  -0.44,-127.42)  100.90                80
 08/05/2019   21:59:07   (   0.28,-128.33) (   0.29,-128.20)   14.63                80
 08/08/2019   09:59:31   (  -0.29,-128.39) (  -0.16,-128.94)   62.57                80
 08/09/2019   09:43:27   (  -0.28,-128.41) (  -1.17,-124.41)  455.39                80
 08/10/2019   22:02:44   (   0.30,-128.40) (   0.02,-129.72)  150.59                80
 08/11/2019   21:46:39   (   0.30,-128.41) (   1.03,-125.19)  367.24                80
 08/13/2019   10:05:48   (  -0.32,-128.45) (   0.12,-130.46)  228.91                80
 08/14/2019   09:49:43   (  -0.31,-128.46) (  -0.90,-125.93)  288.62                80
 08/15/2019   22:09:00   (   0.33,-128.45) (  -0.31,-131.23)  318.05                80