Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 12 30.  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)
 12/31/2018   13:11:00   (  -0.14,-128.57) (   0.23,-130.25)  191.10                80
 01/01/2019   13:02:03   (  -0.13,-128.55) (  -0.38,-127.41)  130.67                80
 01/02/2019   12:50:28   (  -0.13,-128.54) (  -1.05,-124.58)  452.32                80
 01/04/2019   01:23:25   (   0.13,-128.42) (  -0.81,-132.46)  461.21                80
 01/05/2019   01:11:49   (   0.12,-128.41) (  -0.15,-129.64)  140.10                80
 01/06/2019   00:57:33   (   0.12,-128.39) (   0.46,-126.79)  180.96                80
 01/08/2019   13:18:38   (  -0.11,-128.42) (   0.66,-131.79)  384.94                80
 01/09/2019   13:07:02   (  -0.11,-128.40) (  -0.01,-128.97)   64.00                80
 01/10/2019   12:58:06   (  -0.11,-128.38) (  -0.62,-126.13)  256.96                80
 01/13/2019   01:19:28   (   0.11,-128.24) (  -0.60,-131.18)  336.28                80