Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 7 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/26/2020   09:40:10   (   0.01,-128.42) (  -0.95,-124.26)  474.10                80
 07/27/2020   22:02:06   (  -0.01,-128.37) (  -0.30,-129.56)  136.39                80
 07/28/2020   21:46:03   (  -0.01,-128.37) (   0.75,-125.04)  379.98                80
 07/30/2020   10:07:51   (   0.01,-128.42) (   0.43,-130.31)  214.74                80
 07/31/2020   09:46:27   (   0.02,-128.42) (  -0.56,-125.77)  301.09                80
 08/01/2020   22:08:24   (  -0.02,-128.35) (  -0.63,-131.08)  310.68                80
 08/02/2020   21:52:20   (  -0.02,-128.35) (   0.37,-126.54)  205.10                80
 08/04/2020   10:14:09   (   0.02,-128.40) (   0.76,-131.83)  390.02                80
 08/05/2020   09:52:44   (   0.02,-128.39) (  -0.24,-127.29)  125.57                80
 08/06/2020   22:14:41   (  -0.01,-128.32) (  -1.00,-132.58)  486.67                80
 08/07/2020   21:58:37   (  -0.01,-128.32) (   0.05,-128.06)   28.94                80