Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2020 12 31.  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)
 12/31/2020   17:46:47   (   0.21,-128.24) (  -0.76,-123.90)  495.20                80
 01/02/2021   06:03:09   (  -0.19,-128.23) (  -0.22,-128.51)   31.41                80
 01/04/2021   18:04:02   (   0.18,-128.21) (   0.17,-128.07)   15.60                80
 01/07/2021   06:02:25   (  -0.17,-128.17) (  -0.08,-127.68)   55.81                80
 01/08/2021   18:18:38   (   0.14,-128.16) (   1.03,-132.25)  466.41                80
 01/09/2021   18:00:39   (   0.16,-128.14) (  -0.04,-127.25)  101.01                80
 01/11/2021   06:17:01   (  -0.12,-128.10) (  -0.94,-131.86)  428.32                80
 01/12/2021   05:59:01   (  -0.15,-128.08) (   0.13,-126.86)  139.06                80
 01/13/2021   18:15:14   (   0.12,-128.06) (   0.87,-131.42)  383.74                80