Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 1 14.  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)
 01/14/2021   17:57:15   (   0.14,-128.06) (  -0.23,-126.43)  186.27                80
 01/16/2021   06:13:37   (  -0.11,-128.02) (  -0.76,-131.04)  343.74                80
 01/17/2021   05:55:38   (  -0.13,-128.00) (   0.32,-126.04)  223.78                80
 01/18/2021   18:11:50   (   0.10,-127.99) (   0.68,-130.60)  298.55                80
 01/19/2021   17:53:51   (   0.12,-127.96) (  -0.39,-125.60)  268.48                80
 01/21/2021   06:10:13   (  -0.08,-127.91) (  -0.60,-130.21)  262.50                80
 01/22/2021   05:52:13   (  -0.11,-127.89) (   0.48,-125.21)  304.52                80
 01/23/2021   18:08:26   (   0.07,-127.87) (   0.52,-129.78)  218.49                80
 01/24/2021   17:50:26   (   0.09,-127.84) (  -0.56,-124.78)  347.81                80
 01/26/2021   06:06:49   (  -0.05,-127.77) (  -0.42,-129.39)  184.80                80
 01/27/2021   05:48:49   (  -0.08,-127.74) (   0.66,-124.39)  381.45                80