Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 10 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/13/2020   09:59:14   (  -0.14,-128.41) (  -0.04,-128.86)   51.26                80
 10/14/2020   09:43:09   (  -0.14,-128.40) (  -1.08,-124.33)  464.24                80
 10/15/2020   22:05:05   (   0.14,-128.37) (  -0.12,-129.64)  143.05                80
 10/16/2020   21:43:39   (   0.14,-128.36) (   0.87,-125.10)  372.01                80
 10/18/2020   10:05:26   (  -0.13,-128.36) (   0.30,-130.37)  229.33                80
 10/19/2020   09:49:21   (  -0.14,-128.34) (  -0.69,-125.83)  285.51                80
 10/20/2020   22:11:16   (   0.13,-128.31) (  -0.51,-131.14)  322.52                80
 10/21/2020   21:49:52   (   0.14,-128.29) (   0.54,-126.61)  191.68                80
 10/23/2020   10:14:18   (  -0.13,-128.27) (   0.69,-131.87)  411.08                80
 10/24/2020   09:52:54   (  -0.14,-128.25) (  -0.36,-127.35)  103.18                80