Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 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)
 03/10/2021   06:19:30   (  -0.15,-128.32) (  -0.93,-131.83)  400.42                80
 03/11/2021   05:56:10   (  -0.15,-128.33) (   0.20,-126.84)  169.65                80
 03/12/2021   18:17:42   (   0.15,-128.43) (   0.82,-131.40)  338.71                80
 03/13/2021   17:54:22   (   0.15,-128.44) (  -0.31,-126.41)  231.47                80
 03/15/2021   06:16:00   (  -0.15,-128.36) (  -0.77,-130.99)  300.17                80
 03/16/2021   05:52:41   (  -0.15,-128.37) (   0.37,-126.00)  269.67                80
 03/17/2021   18:11:33   (   0.15,-128.47) (   0.60,-130.57)  239.51                80
 03/18/2021   17:50:53   (   0.15,-128.47) (  -0.47,-125.57)  330.09                80
 03/20/2021   06:12:32   (  -0.15,-128.39) (  -0.54,-130.16)  202.62                80
 03/21/2021   05:49:13   (  -0.14,-128.38) (   0.60,-125.17)  366.34                80
 03/22/2021   18:08:04   (   0.14,-128.47) (   0.44,-129.73)  144.40                80
 03/23/2021   17:50:04   (   0.14,-128.46) (  -0.70,-124.74)  424.41                80