Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 8 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/06/2020   22:14:42   (   0.01,-128.27) (  -0.94,-132.60)  492.39                80
 08/07/2020   21:58:38   (   0.01,-128.26) (   0.06,-128.06)   22.50                80
 08/10/2020   09:59:01   (  -0.01,-128.27) (   0.13,-128.80)   60.58                80
 08/11/2020   09:40:18   (  -0.01,-128.25) (  -0.93,-124.28)  453.77                80
 08/12/2020   22:02:14   (   0.01,-128.17) (  -0.31,-129.57)  159.95                80
 08/13/2020   21:46:10   (   0.01,-128.15) (   0.68,-125.04)  354.04                80
 08/15/2020   10:05:19   (  -0.02,-128.16) (   0.44,-130.32)  245.05                80
 08/16/2020   09:49:15   (  -0.02,-128.14) (  -0.56,-125.79)  268.41                80
 08/17/2020   22:08:31   (   0.02,-128.04) (  -0.68,-131.08)  346.80                80
 08/18/2020   21:52:26   (   0.02,-128.01) (   0.32,-126.55)  166.47                80
 08/20/2020   10:11:35   (  -0.02,-128.02) (   0.86,-131.82)  433.37                80