Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 9 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/05/2020   10:11:42   (  -0.08,-127.95) (   0.78,-131.84)  442.78                80
 09/06/2020   09:55:38   (  -0.08,-127.98) (  -0.22,-127.30)   77.18                80
 09/08/2020   21:58:51   (   0.08,-128.00) (   0.06,-128.08)    8.81                80
 09/11/2020   09:59:15   (  -0.09,-128.12) (   0.05,-128.83)   80.34                80
 09/12/2020   09:43:11   (  -0.09,-128.15) (  -0.95,-124.30)  438.50                80
 09/13/2020   22:05:08   (   0.10,-128.13) (  -0.21,-129.61)  168.38                80
 09/14/2020   21:43:44   (   0.10,-128.14) (   0.80,-125.07)  350.06                80
 09/16/2020   10:05:32   (  -0.11,-128.22) (   0.38,-130.34)  241.94                80
 09/17/2020   09:49:28   (  -0.11,-128.24) (  -0.62,-125.81)  276.48                80