Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 10 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/18/2020   10:05:26   (  -0.13,-128.37) (   0.30,-130.37)  228.04                80
 10/19/2020   09:49:21   (  -0.14,-128.35) (  -0.69,-125.83)  287.03                80
 10/20/2020   22:11:16   (   0.13,-128.32) (  -0.51,-131.13)  320.90                80
 10/21/2020   21:49:52   (   0.14,-128.30) (   0.54,-126.61)  193.48                80
 10/23/2020   10:14:18   (  -0.13,-128.29) (   0.69,-131.87)  408.66                80
 10/24/2020   09:52:53   (  -0.14,-128.27) (  -0.36,-127.35)  105.83                80
 10/26/2020   21:56:03   (   0.14,-128.22) (   0.15,-128.11)   12.12                80
 10/29/2020   10:01:45   (  -0.13,-128.18) (   0.03,-128.85)   76.16                80
 10/30/2020   09:40:21   (  -0.14,-128.16) (  -1.02,-124.32)  438.11                80