Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 26.  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)
 12/26/2020   17:50:10   (   0.22,-128.26) (  -0.55,-124.71)  403.69                80
 12/28/2020   06:06:32   (  -0.19,-128.26) (  -0.43,-129.32)  120.83                80
 12/29/2020   05:48:34   (  -0.21,-128.26) (   0.69,-124.33)  448.15                80
 12/30/2020   18:04:46   (   0.19,-128.25) (   0.33,-128.89)   73.95                80
 12/31/2020   17:46:46   (   0.21,-128.24) (  -0.74,-123.89)  494.48                80
 01/02/2021   06:03:09   (  -0.19,-128.23) (  -0.25,-128.50)   31.46                80
 01/04/2021   18:04:03   (   0.18,-128.20) (   0.14,-128.08)   14.32                80
 01/07/2021   06:02:25   (  -0.17,-128.16) (  -0.05,-127.68)   55.00                80
 01/08/2021   18:18:38   (   0.14,-128.14) (   1.06,-132.25)  468.09                80