Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2019 12 20.  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)
 12/22/2019   06:05:35   (   0.11,-128.08) (   0.01,-128.54)   51.95                80
 12/24/2019   18:01:09   (  -0.10,-128.12) (  -0.11,-128.11)    1.73                80
 12/27/2019   05:59:32   (   0.10,-128.21) (   0.21,-127.71)   57.54                80
 12/28/2019   18:21:04   (  -0.08,-128.22) (   0.81,-132.27)  461.59                80
 12/29/2019   17:57:46   (  -0.09,-128.24) (  -0.32,-127.28)  109.99                80
 12/31/2019   06:19:27   (   0.07,-128.31) (  -0.72,-131.87)  405.79                80
 01/01/2020   05:56:08   (   0.08,-128.33) (   0.42,-126.88)  165.49                80
 01/02/2020   18:17:41   (  -0.06,-128.33) (   0.60,-131.44)  354.21                80
 01/03/2020   17:54:21   (  -0.07,-128.35) (  -0.47,-126.44)  217.00                80