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) (   0.80,-131.83)  442.71                80
 09/06/2020   09:55:38   (  -0.08,-127.98) (  -0.26,-127.31)   77.31                80
 09/08/2020   21:58:51   (   0.08,-128.00) (   0.09,-128.09)    9.29                80
 09/11/2020   09:59:15   (  -0.09,-128.12) (   0.08,-128.82)   80.21                80
 09/12/2020   09:43:11   (  -0.09,-128.15) (  -0.98,-124.30)  438.65                80
 09/13/2020   22:05:08   (   0.10,-128.13) (  -0.24,-129.60)  168.42                80
 09/14/2020   21:43:43   (   0.10,-128.14) (   0.77,-125.07)  350.02                80
 09/16/2020   10:05:33   (  -0.11,-128.23) (   0.35,-130.35)  241.78                80
 09/17/2020   09:49:28   (  -0.11,-128.25) (  -0.65,-125.82)  276.63                80