Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 10 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/18/2020   10:05:26   (  -0.13,-128.37) (   0.33,-130.36)  228.01                80
 10/19/2020   09:49:21   (  -0.14,-128.35) (  -0.72,-125.84)  287.06                80
 10/20/2020   22:11:17   (   0.13,-128.32) (  -0.48,-131.14)  320.98                80
 10/21/2020   21:49:51   (   0.14,-128.30) (   0.51,-126.60)  193.39                80
 10/23/2020   10:14:18   (  -0.13,-128.29) (   0.66,-131.88)  408.65                80
 10/24/2020   09:52:53   (  -0.14,-128.27) (  -0.33,-127.34)  105.84                80
 10/26/2020   21:56:04   (   0.14,-128.22) (   0.19,-128.12)   12.42                80
 10/29/2020   10:01:46   (  -0.13,-128.18) (  -0.01,-128.85)   76.23                80
 10/30/2020   09:40:20   (  -0.14,-128.16) (  -1.00,-124.32)  438.08                80
 10/31/2020   22:04:56   (   0.12,-128.12) (  -0.19,-129.62)  170.19                80