Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 1 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/02/2020   21:45:50   (   0.04,-128.30) (   0.76,-125.04)  371.42                80
 01/04/2020   10:04:57   (  -0.05,-128.35) (   0.37,-130.32)  223.14                80
 01/05/2020   09:48:51   (  -0.04,-128.37) (  -0.64,-125.78)  295.30                80
 01/06/2020   22:08:07   (   0.05,-128.36) (  -0.54,-131.08)  310.13                80
 01/07/2020   21:52:01   (   0.04,-128.37) (   0.47,-126.55)  207.74                80
 01/09/2020   10:11:07   (  -0.04,-128.40) (   0.73,-131.81)  388.39                80
 01/10/2020   09:55:02   (  -0.04,-128.41) (  -0.28,-127.28)  129.08                80
 01/11/2020   22:14:17   (   0.04,-128.39) (  -0.89,-132.58)  477.41                80
 01/12/2020   21:58:12   (   0.04,-128.39) (   0.12,-128.04)   39.51                80
 01/15/2020   09:58:33   (  -0.04,-128.42) (   0.06,-128.77)   41.26                80
 01/16/2020   09:42:27   (  -0.04,-128.42) (  -0.95,-124.24)  475.62                80