Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 10 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2019   10:11:48   (   0.19,-128.25) (   1.01,-131.82)  407.75                80
 10/22/2019   09:55:43   (   0.20,-128.27) (  -0.03,-127.30)  111.11                80
 10/23/2019   22:15:00   (  -0.17,-128.26) (  -1.13,-132.61)  495.74                80
 10/24/2019   21:58:54   (  -0.19,-128.28) (  -0.15,-128.07)   23.16                80
 10/27/2019   09:59:17   (   0.18,-128.37) (   0.29,-128.82)   51.05                80
 10/28/2019   09:43:12   (   0.19,-128.39) (  -0.76,-124.30)  467.48                80
 10/29/2019   22:02:28   (  -0.17,-128.37) (  -0.45,-129.60)  140.20                80
 10/30/2019   21:46:23   (  -0.18,-128.38) (   0.59,-125.07)  378.15                80
 11/01/2019   10:05:31   (   0.15,-128.45) (   0.59,-130.34)  215.68                80
 11/02/2019   09:49:26   (   0.16,-128.46) (  -0.46,-125.82)  302.22                80