Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2020   09:55:02   (  -0.04,-128.41) (  -0.30,-127.28)  129.55                80
 01/11/2020   22:14:18   (   0.05,-128.40) (  -0.88,-132.58)  476.13                80
 01/12/2020   21:58:12   (   0.04,-128.40) (   0.13,-128.05)   41.05                80
 01/15/2020   09:58:33   (  -0.05,-128.43) (   0.05,-128.77)   39.56                80
 01/16/2020   09:42:27   (  -0.04,-128.43) (  -0.96,-124.24)  477.51                80
 01/17/2020   22:01:43   (   0.05,-128.41) (  -0.21,-129.54)  128.78                80
 01/18/2020   21:45:37   (   0.04,-128.41) (   0.80,-125.01)  387.93                80
 01/20/2020   10:04:44   (  -0.04,-128.43) (   0.40,-130.27)  210.53                80
 01/21/2020   09:48:38   (  -0.04,-128.42) (  -0.61,-125.73)  306.01                80
 01/22/2020   22:07:53   (   0.04,-128.40) (  -0.55,-131.04)  300.84                80