Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 9 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/27/2020   09:59:20   (  -0.13,-128.41) (  -0.03,-128.85)   49.65                80
 09/28/2020   09:43:15   (  -0.13,-128.42) (  -1.07,-124.32)  467.73                80
 09/29/2020   22:05:11   (   0.13,-128.39) (  -0.15,-129.62)  139.93                80
 09/30/2020   21:43:46   (   0.13,-128.40) (   0.89,-125.10)  377.22                80
 10/02/2020   10:05:33   (  -0.13,-128.46) (   0.30,-130.37)  217.86                80
 10/03/2020   09:49:29   (  -0.13,-128.46) (  -0.74,-125.84)  299.30                80
 10/04/2020   22:11:24   (   0.13,-128.43) (  -0.47,-131.14)  308.60                80
 10/05/2020   21:50:00   (   0.13,-128.44) (   0.57,-126.62)  207.91                80
 10/07/2020   10:11:47   (  -0.13,-128.47) (   0.62,-131.89)  388.79                80
 10/08/2020   09:55:42   (  -0.14,-128.47) (  -0.36,-127.35)  127.45                80