Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 30.  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)
 12/30/2020   18:04:46   (   0.19,-128.25) (   0.32,-128.90)   73.43                80
 12/31/2020   17:46:47   (   0.21,-128.24) (  -0.75,-123.90)  495.09                80
 01/02/2021   06:03:09   (  -0.19,-128.23) (  -0.24,-128.50)   31.37                80
 01/04/2021   18:04:03   (   0.18,-128.21) (   0.12,-128.08)   15.49                80
 01/07/2021   06:02:26   (  -0.17,-128.17) (  -0.03,-127.69)   55.60                80
 01/08/2021   18:18:38   (   0.14,-128.15) (   1.04,-132.25)  466.82                80
 01/09/2021   18:00:38   (   0.16,-128.13) (  -0.03,-127.25)  100.57                80
 01/11/2021   06:17:01   (  -0.12,-128.09) (  -0.95,-131.86)  428.69                80
 01/12/2021   05:59:01   (  -0.15,-128.07) (   0.12,-126.86)  138.66                80