Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 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)
 10/19/2019   21:52:40   (  -0.22,-128.17) (   0.16,-126.55)  184.63                80
 10/21/2019   10:11:49   (   0.19,-128.25) (   0.97,-131.84)  408.01                80
 10/22/2019   09:55:43   (   0.20,-128.27) (  -0.01,-127.30)  110.70                80
 10/23/2019   22:14:59   (  -0.18,-128.25) (  -1.14,-132.61)  496.62                80
 10/24/2019   21:58:54   (  -0.19,-128.27) (  -0.16,-128.07)   22.18                80
 10/27/2019   09:59:17   (   0.18,-128.37) (   0.30,-128.82)   52.23                80
 10/28/2019   09:43:12   (   0.19,-128.38) (  -0.74,-124.29)  466.18                80
 10/29/2019   22:02:28   (  -0.17,-128.35) (  -0.46,-129.59)  141.97                80
 10/30/2019   21:46:23   (  -0.18,-128.37) (   0.58,-125.07)  376.24                80
 11/01/2019   10:05:30   (   0.15,-128.44) (   0.60,-130.34)  217.57                80