Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 10 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/09/2020   22:17:37   (   0.13,-128.42) (  -0.81,-132.65)  482.26                80
 10/10/2020   21:56:11   (   0.14,-128.41) (   0.18,-128.11)   33.27                80
 10/13/2020   09:59:14   (  -0.14,-128.40) (  -0.05,-128.86)   51.85                80
 10/14/2020   09:43:08   (  -0.14,-128.40) (  -1.04,-124.32)  463.47                80
 10/15/2020   22:05:04   (   0.14,-128.36) (  -0.16,-129.63)  144.26                80
 10/16/2020   21:43:39   (   0.14,-128.35) (   0.89,-125.10)  370.63                80
 10/18/2020   10:08:06   (  -0.13,-128.34) (   0.35,-130.36)  230.78                80
 10/19/2020   09:49:21   (  -0.14,-128.33) (  -0.70,-125.84)  283.91                80
 10/20/2020   22:11:16   (   0.13,-128.29) (  -0.49,-131.14)  324.58                80
 10/21/2020   21:49:51   (   0.14,-128.27) (   0.50,-126.61)  189.44                80