Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 12 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 12/22/2018   05:49:44   (   0.14,-128.61) (   0.13,-128.61)    1.61                80
 12/24/2018   17:47:50   (  -0.13,-128.58) (  -0.24,-128.18)   45.61                80
 12/26/2018   06:06:47   (   0.12,-128.58) (  -0.80,-132.78)  477.45                80
 12/27/2018   05:43:24   (   0.12,-128.57) (   0.29,-127.78)   90.02                80
 12/28/2018   18:02:11   (  -0.11,-128.53) (   0.75,-132.33)  434.00                80
 12/29/2018   17:44:10   (  -0.11,-128.52) (  -0.39,-127.34)  134.37                80
 12/31/2018   06:03:06   (   0.10,-128.53) (  -0.63,-131.94)  388.12                80
 01/01/2019   05:39:44   (   0.11,-128.51) (   0.46,-126.94)  179.01                80
 01/02/2019   17:58:31   (  -0.10,-128.46) (   0.59,-131.50)  346.62                80