Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 10 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/19/2020   09:49:21   (  -0.14,-128.35) (  -0.72,-125.84)  287.07                80
 10/20/2020   22:11:17   (   0.13,-128.32) (  -0.48,-131.14)  321.09                80
 10/21/2020   21:49:51   (   0.14,-128.30) (   0.51,-126.60)  193.25                80
 10/23/2020   10:14:18   (  -0.13,-128.29) (   0.66,-131.88)  408.73                80
 10/24/2020   09:52:53   (  -0.14,-128.27) (  -0.33,-127.34)  105.74                80
 10/26/2020   21:56:04   (   0.14,-128.22) (   0.19,-128.12)   12.21                80
 10/29/2020   10:01:45   (  -0.13,-128.18) (   0.05,-128.84)   76.42                80
 10/30/2020   09:40:20   (  -0.14,-128.16) (  -1.00,-124.32)  437.88                80
 10/31/2020   22:04:55   (   0.12,-128.12) (  -0.18,-129.62)  170.52                80
 11/01/2020   21:43:30   (   0.13,-128.09) (   0.81,-125.09)  343.08                80