Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/01/2020   22:01:55   (   0.05,-128.28) (  -0.25,-129.57)  147.22                80
 01/02/2020   21:45:49   (   0.04,-128.30) (   0.76,-125.04)  371.38                80
 01/04/2020   10:04:57   (  -0.05,-128.35) (   0.38,-130.31)  223.13                80
 01/05/2020   09:48:51   (  -0.04,-128.37) (  -0.63,-125.78)  295.31                80
 01/06/2020   22:08:07   (   0.05,-128.36) (  -0.55,-131.08)  310.13                80
 01/07/2020   21:52:01   (   0.04,-128.37) (   0.46,-126.55)  207.73                80
 01/09/2020   10:11:07   (  -0.04,-128.40) (   0.74,-131.81)  388.38                80
 01/10/2020   09:55:02   (  -0.04,-128.41) (  -0.27,-127.27)  129.11                80
 01/11/2020   22:14:17   (   0.04,-128.39) (  -0.90,-132.58)  477.37                80
 01/12/2020   21:58:12   (   0.04,-128.39) (   0.11,-128.04)   39.54                80