Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 3 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/01/2020   21:58:26   (   0.26,-127.85) (   0.20,-128.14)   32.44                80
 04/02/2020   21:39:42   (   0.27,-127.82) (   1.21,-123.61)  479.77                80
 04/04/2020   10:01:29   (  -0.25,-127.73) (  -0.01,-128.87)  129.08                80
 04/05/2020   09:40:04   (  -0.26,-127.69) (  -1.02,-124.34)  382.46                80
 04/06/2020   22:04:40   (   0.23,-127.65) (  -0.24,-129.63)  226.38                80
 04/07/2020   21:43:15   (   0.25,-127.61) (   0.78,-125.10)  285.39                80
 04/09/2020   10:07:42   (  -0.22,-127.52) (   0.42,-130.36)  323.52                80
 04/10/2020   09:46:18   (  -0.24,-127.48) (  -0.60,-125.83)  187.45                80
 04/11/2020   22:10:54   (   0.21,-127.42) (  -0.60,-131.13)  422.86                80
 04/12/2020   21:49:30   (   0.23,-127.37) (   0.42,-126.60)   88.29                80