Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 10 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2020   21:49:51   (   0.14,-128.30) (   0.51,-126.60)  193.00                80
 10/23/2020   10:14:18   (  -0.13,-128.28) (   0.66,-131.87)  408.97                80
 10/24/2020   09:52:53   (  -0.14,-128.27) (  -0.33,-127.34)  105.42                80
 10/26/2020   21:56:03   (   0.14,-128.21) (   0.13,-128.10)   11.53                80
 10/29/2020   10:01:45   (  -0.13,-128.17) (   0.04,-128.84)   77.11                80
 10/30/2020   09:40:20   (  -0.14,-128.15) (  -1.01,-124.32)  437.09                80
 10/31/2020   22:04:54   (   0.12,-128.11) (  -0.23,-129.61)  171.56                80
 11/01/2020   21:43:30   (   0.13,-128.08) (   0.82,-125.09)  341.96                80
 11/03/2020   10:07:56   (  -0.11,-128.05) (   0.40,-130.35)  261.79                80