Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 9 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/29/2020   22:05:10   (   0.13,-128.39) (  -0.15,-129.62)  139.99                80
 09/30/2020   21:43:46   (   0.13,-128.40) (   0.90,-125.10)  377.03                80
 10/02/2020   10:05:33   (  -0.13,-128.45) (   0.28,-130.37)  218.61                80
 10/03/2020   09:49:28   (  -0.13,-128.45) (  -0.70,-125.83)  298.39                80
 10/04/2020   22:11:23   (   0.13,-128.42) (  -0.50,-131.13)  309.40                80
 10/05/2020   21:49:59   (   0.13,-128.42) (   0.54,-126.61)  206.97                80
 10/07/2020   10:11:46   (  -0.13,-128.46) (   0.64,-131.88)  390.20                80
 10/08/2020   09:55:41   (  -0.14,-128.45) (  -0.41,-127.36)  125.90                80
 10/09/2020   22:17:37   (   0.13,-128.41) (  -0.79,-132.66)  482.87                80
 10/10/2020   21:56:11   (   0.14,-128.41) (   0.20,-128.12)   32.51                80