Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2020   21:58:51   (   0.08,-128.01) (   0.09,-128.09)    8.61                80
 09/11/2020   09:59:15   (  -0.09,-128.12) (   0.07,-128.82)   80.35                80
 09/12/2020   09:43:10   (  -0.09,-128.14) (  -0.93,-124.29)  438.52                80
 09/13/2020   22:05:08   (   0.10,-128.13) (  -0.23,-129.60)  167.50                80
 09/14/2020   21:43:43   (   0.10,-128.15) (   0.78,-125.07)  350.96                80
 09/16/2020   10:05:33   (  -0.11,-128.22) (   0.34,-130.35)  241.76                80
 09/17/2020   09:49:28   (  -0.11,-128.24) (  -0.67,-125.82)  276.70                80
 09/18/2020   22:11:24   (   0.11,-128.23) (  -0.54,-131.12)  329.60                80
 09/19/2020   21:50:00   (   0.11,-128.24) (   0.46,-126.58)  188.44                80
 09/21/2020   10:11:48   (  -0.11,-128.30) (   0.71,-131.85)  405.41                80
 09/22/2020   09:55:45   (  -0.11,-128.32) (  -0.35,-127.33)  112.35                80