Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 2 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/12/2020   22:14:23   (   0.37,-128.34) (  -0.59,-132.66)  493.02                80
 02/13/2020   21:58:18   (   0.36,-128.37) (   0.41,-128.13)   26.88                80
 02/16/2020   09:58:43   (  -0.36,-128.43) (  -0.28,-128.88)   50.59                80
 02/17/2020   09:42:38   (  -0.35,-128.46) (  -1.29,-124.35)  468.77                80
 02/18/2020   22:01:56   (   0.36,-128.51) (   0.13,-129.66)  131.14                80
 02/19/2020   21:45:51   (   0.35,-128.53) (   1.14,-125.13)  388.11                80
 02/21/2020   10:05:00   (  -0.36,-128.56) (   0.05,-130.40)  209.48                80
 02/22/2020   09:48:55   (  -0.35,-128.59) (  -0.96,-125.87)  309.43                80
 02/23/2020   22:08:12   (   0.36,-128.63) (  -0.19,-131.19)  291.05                80
 02/24/2020   21:52:08   (   0.35,-128.65) (   0.81,-126.66)  227.89                80