Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 29.  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)
 12/29/2020   05:48:33   (  -0.21,-128.26) (   0.68,-124.33)  448.02                80
 12/30/2020   18:04:46   (   0.19,-128.25) (   0.35,-128.89)   73.56                80
 12/31/2020   17:46:47   (   0.21,-128.24) (  -0.78,-123.90)  494.94                80
 01/02/2021   06:03:09   (  -0.19,-128.23) (  -0.26,-128.50)   31.43                80
 01/04/2021   18:04:02   (   0.18,-128.20) (   0.15,-128.07)   14.87                80
 01/07/2021   06:02:25   (  -0.17,-128.17) (  -0.06,-127.68)   55.26                80
 01/08/2021   18:18:38   (   0.14,-128.15) (   1.07,-132.24)  467.28                80
 01/09/2021   18:00:39   (   0.16,-128.13) (  -0.06,-127.26)  100.10                80
 01/11/2021   06:17:00   (  -0.12,-128.09) (  -0.98,-131.85)  429.09                80