Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 2 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/19/2020   21:45:50   (   0.35,-128.43) (   1.07,-125.12)  376.91                80
 02/21/2020   10:04:59   (  -0.36,-128.42) (   0.05,-130.40)  225.60                80
 02/22/2020   09:48:55   (  -0.35,-128.42) (  -0.95,-125.87)  291.53                80
 02/23/2020   22:08:11   (   0.36,-128.46) (  -0.26,-131.17)  309.62                80
 02/24/2020   21:52:07   (   0.36,-128.46) (   0.74,-126.64)  207.50                80
 02/26/2020   10:13:55   (  -0.36,-128.45) (   0.44,-131.91)  395.01                80
 02/27/2020   09:52:32   (  -0.36,-128.45) (  -0.62,-127.39)  121.74                80
 02/28/2020   22:14:28   (   0.36,-128.48) (  -0.59,-132.69)  480.25                80
 02/29/2020   21:58:23   (   0.36,-128.48) (   0.42,-128.16)   36.27                80
 03/03/2020   10:01:27   (  -0.35,-128.45) (  -0.24,-128.90)   51.09                80