Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 9 29.  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   22:05:11   (   0.13,-128.39) (  -0.12,-129.63)  139.91                80
 09/30/2020   21:43:45   (   0.13,-128.40) (   0.87,-125.09)  377.09                80
 10/02/2020   10:05:33   (  -0.13,-128.44) (   0.31,-130.36)  218.77                80
 10/03/2020   09:49:28   (  -0.13,-128.45) (  -0.73,-125.84)  298.19                80
 10/04/2020   22:11:23   (   0.13,-128.42) (  -0.48,-131.14)  309.50                80
 10/05/2020   21:49:59   (   0.13,-128.42) (   0.57,-126.61)  206.84                80
 10/07/2020   10:11:46   (  -0.13,-128.45) (   0.61,-131.88)  390.57                80
 10/08/2020   09:55:41   (  -0.14,-128.45) (  -0.37,-127.35)  125.47                80
 10/09/2020   22:17:36   (   0.13,-128.41) (  -0.83,-132.65)  483.21                80
 10/10/2020   21:56:12   (   0.14,-128.40) (   0.22,-128.13)   32.17                80
 10/13/2020   09:59:14   (  -0.14,-128.41) (  -0.03,-128.86)   51.56                80