Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 7 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/25/2020   10:01:34   (   0.01,-128.43) (   0.09,-128.79)   41.31                80
 07/26/2020   09:40:09   (   0.01,-128.43) (  -0.90,-124.25)  475.23                80
 07/27/2020   22:02:07   (  -0.01,-128.38) (  -0.29,-129.56)  134.96                80
 07/28/2020   21:46:03   (  -0.01,-128.38) (   0.76,-125.04)  381.44                80
 07/30/2020   10:07:51   (   0.02,-128.43) (   0.43,-130.31)  213.41                80
 07/31/2020   09:46:27   (   0.02,-128.43) (  -0.57,-125.77)  302.52                80
 08/01/2020   22:08:24   (  -0.03,-128.37) (  -0.62,-131.08)  308.87                80
 08/02/2020   21:52:20   (  -0.03,-128.36) (   0.38,-126.55)  206.98                80
 08/04/2020   10:14:08   (   0.03,-128.41) (   0.81,-131.81)  388.29                80
 08/05/2020   09:52:45   (   0.03,-128.41) (  -0.24,-127.29)  127.40                80