Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 13.  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)
 01/13/2021   18:15:14   (   0.12,-128.09) (   0.88,-131.42)  380.90                80
 01/14/2021   17:57:15   (   0.14,-128.06) (  -0.25,-126.44)  186.37                80
 01/16/2021   06:13:37   (  -0.11,-128.02) (  -0.80,-131.03)  343.58                80
 01/17/2021   05:55:37   (  -0.14,-128.00) (   0.28,-126.03)  224.01                80
 01/18/2021   18:11:50   (   0.10,-127.99) (   0.66,-130.61)  298.26                80
 01/19/2021   17:53:51   (   0.12,-127.97) (  -0.41,-125.61)  268.83                80
 01/21/2021   06:10:13   (  -0.08,-127.91) (  -0.58,-130.22)  262.07                80
 01/22/2021   05:52:14   (  -0.11,-127.89) (   0.50,-125.22)  305.01                80
 01/23/2021   18:08:26   (   0.07,-127.87) (   0.50,-129.78)  217.91                80
 01/24/2021   17:50:27   (   0.09,-127.84) (  -0.58,-124.78)  348.43                80
 01/26/2021   06:06:49   (  -0.05,-127.77) (  -0.40,-129.39)  184.09                80