Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 12 19.  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)
 12/20/2018   05:54:14   (   0.15,-128.62) (   0.54,-126.90)  196.43                80
 12/21/2018   18:13:07   (  -0.14,-128.60) (   0.50,-131.45)  325.08                80
 12/22/2018   17:55:08   (  -0.14,-128.60) (  -0.61,-126.46)  243.55                80
 12/24/2018   06:14:10   (   0.12,-128.61) (  -0.40,-131.06)  279.14                80
 12/25/2018   05:50:52   (   0.13,-128.59) (   0.72,-126.07)  288.15                80
 12/26/2018   18:09:44   (  -0.11,-128.55) (   0.32,-130.62)  235.37                80
 12/27/2018   17:51:46   (  -0.12,-128.54) (  -0.80,-125.63)  332.79                80
 12/29/2018   06:10:47   (   0.10,-128.55) (  -0.27,-130.22)  189.46                80
 12/30/2018   05:47:29   (   0.11,-128.54) (   0.85,-125.22)  377.53                80
 12/31/2018   18:06:21   (  -0.10,-128.48) (   0.19,-129.78)  147.34                80
 01/01/2019   17:48:22   (  -0.11,-128.47) (  -0.92,-124.78)  420.40                80