Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 10.  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)
 01/11/2021   06:17:01   (  -0.12,-128.12) (  -0.98,-131.85)  426.04                80
 01/12/2021   05:59:02   (  -0.15,-128.10) (   0.16,-126.87)  141.70                80
 01/13/2021   18:15:14   (   0.12,-128.09) (   0.85,-131.43)  380.49                80
 01/14/2021   17:57:15   (   0.14,-128.07) (  -0.23,-126.43)  186.88                80
 01/16/2021   06:13:37   (  -0.11,-128.03) (  -0.77,-131.04)  342.93                80
 01/17/2021   05:55:38   (  -0.14,-128.01) (   0.31,-126.04)  224.76                80
 01/18/2021   18:11:50   (   0.10,-128.00) (   0.69,-130.60)  297.18                80
 01/19/2021   17:53:51   (   0.12,-127.98) (  -0.38,-125.60)  270.04                80
 01/21/2021   06:10:13   (  -0.09,-127.93) (  -0.60,-130.21)  260.74                80
 01/22/2021   05:52:13   (  -0.11,-127.90) (   0.47,-125.21)  306.47                80
 01/23/2021   18:08:27   (   0.07,-127.89) (   0.47,-129.79)  216.20                80