Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 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)
 08/05/2019   21:59:07   (   0.28,-128.33) (   0.30,-128.20)   14.48                80
 08/08/2019   09:59:31   (  -0.29,-128.39) (  -0.17,-128.94)   62.52                80
 08/09/2019   09:43:27   (  -0.28,-128.41) (  -1.18,-124.41)  455.41                80
 08/10/2019   22:02:44   (   0.31,-128.39) (   0.03,-129.72)  150.76                80
 08/11/2019   21:46:40   (   0.30,-128.41) (   1.05,-125.19)  367.08                80
 08/13/2019   10:05:48   (  -0.32,-128.45) (   0.10,-130.47)  228.92                80
 08/14/2019   09:49:42   (  -0.31,-128.46) (  -0.86,-125.92)  288.63                80
 08/15/2019   22:09:00   (   0.33,-128.44) (  -0.29,-131.23)  318.25                80
 08/16/2019   21:52:55   (   0.33,-128.45) (   0.73,-126.70)  199.32                80
 08/18/2019   10:12:04   (  -0.34,-128.49) (   0.42,-131.98)  396.72                80