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   21:45:51   (   0.35,-128.43) (   1.12,-125.13)  376.94                80
 02/21/2020   10:04:59   (  -0.36,-128.41) (   0.06,-130.40)  225.70                80
 02/22/2020   09:48:55   (  -0.35,-128.42) (  -0.94,-125.87)  291.39                80
 02/23/2020   22:08:11   (   0.36,-128.46) (  -0.27,-131.17)  309.74                80
 02/24/2020   21:52:07   (   0.36,-128.46) (   0.73,-126.64)  207.35                80
 02/26/2020   10:13:56   (  -0.36,-128.45) (   0.39,-131.92)  395.29                80
 02/27/2020   09:52:50   (  -0.36,-128.45) (  -0.62,-127.39)  121.42                62
 02/28/2020   22:14:28   (   0.36,-128.48) (  -0.59,-132.69)  480.55                80
 02/29/2020   21:58:23   (   0.36,-128.48) (   0.41,-128.16)   35.95                80
 03/03/2020   10:01:27   (  -0.35,-128.45) (  -0.24,-128.90)   51.60                80
 03/04/2020   09:40:03   (  -0.35,-128.44) (  -1.24,-124.37)  464.01                80