Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 12 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/30/2018   05:47:29   (   0.11,-128.55) (   0.87,-125.23)  378.49                80
 12/31/2018   18:06:21   (  -0.10,-128.51) (   0.17,-129.78)  145.13                80
 01/01/2019   17:48:23   (  -0.10,-128.50) (  -0.95,-124.79)  422.68                80
 01/03/2019   06:07:24   (   0.09,-128.50) (  -0.12,-129.38)  100.46                80
 01/04/2019   05:44:06   (   0.10,-128.48) (   1.00,-124.39)  466.16                80
 01/05/2019   18:02:58   (  -0.08,-128.42) (   0.03,-128.94)   59.08                80
 01/08/2019   06:04:01   (   0.07,-128.41) (   0.02,-128.54)   15.01                80
 01/10/2019   18:02:15   (  -0.06,-128.32) (  -0.10,-128.10)   24.74                80
 01/12/2019   06:21:16   (   0.05,-128.33) (  -0.95,-132.69)  497.15                80