Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 8 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/01/2020   22:08:25   (   0.01,-128.33) (  -0.59,-131.08)  313.40                80
 08/02/2020   21:52:20   (   0.01,-128.32) (   0.40,-126.55)  201.84                80
 08/04/2020   10:14:08   (  -0.01,-128.36) (   0.78,-131.82)  394.36                80
 08/05/2020   09:52:45   (  -0.01,-128.35) (  -0.27,-127.30)  120.74                80
 08/06/2020   22:14:41   (   0.01,-128.27) (  -0.98,-132.59)  492.14                80
 08/07/2020   21:58:38   (   0.00,-128.26) (   0.08,-128.07)   23.19                80
 08/10/2020   10:01:42   (  -0.00,-128.29) (   0.11,-128.80)   58.71                80
 08/11/2020   09:40:17   (  -0.00,-128.27) (  -0.88,-124.27)  455.78                80
 08/12/2020   22:02:15   (   0.01,-128.18) (  -0.30,-129.58)  158.37                80
 08/13/2020   21:46:10   (   0.01,-128.17) (   0.70,-125.04)  355.79                80
 08/15/2020   10:07:58   (  -0.00,-128.19) (   0.48,-130.31)  242.01                80