Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 09/19/2018   13:02:05   (   0.23,-135.52) (  -0.76,-131.22)  491.02                80
 09/21/2018   01:32:26   (  -0.17,-135.46) (  -1.04,-139.12)  419.00                80
 09/22/2018   01:20:51   (  -0.18,-135.48) (  -0.38,-136.30)   94.37                80
 09/23/2018   01:11:57   (  -0.19,-135.50) (   0.28,-133.48)  230.08                80
 09/25/2018   13:30:26   (   0.14,-135.63) (   0.82,-138.50)  328.49                80
 09/26/2018   13:18:51   (   0.16,-135.64) (   0.17,-135.68)    4.61                80
 09/27/2018   13:09:57   (   0.16,-135.65) (  -0.48,-132.85)  319.09                80
 09/30/2018   01:28:41   (  -0.12,-135.57) (  -0.67,-137.93)  269.33                80
 10/01/2018   01:19:46   (  -0.13,-135.58) (   0.00,-135.11)   53.83                80
 10/02/2018   01:08:11   (  -0.14,-135.58) (   0.62,-132.28)  376.69                80