Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 6 6.  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)
 06/06/2021   05:56:26   (   0.08,-128.46) (   0.42,-126.92)  176.23                80
 06/07/2021   18:15:18   (  -0.08,-128.49) (   0.59,-131.48)  340.72                80
 06/08/2021   17:57:20   (  -0.08,-128.49) (  -0.55,-126.49)  228.81                80
 06/10/2021   06:16:21   (   0.09,-128.48) (  -0.48,-131.09)  297.06                80
 06/11/2021   05:53:02   (   0.09,-128.47) (   0.60,-126.08)  271.23                80
 06/12/2021   18:11:54   (  -0.09,-128.48) (   0.41,-130.65)  247.80                80
 06/13/2021   17:53:55   (  -0.10,-128.47) (  -0.73,-125.66)  320.84                80
 06/15/2021   06:12:57   (   0.10,-128.45) (  -0.30,-130.25)  205.32                80
 06/16/2021   05:49:37   (   0.10,-128.44) (   0.79,-125.25)  362.34                80
 06/17/2021   18:08:30   (  -0.11,-128.43) (   0.23,-129.81)  158.27                80
 06/18/2021   17:50:31   (  -0.11,-128.42) (  -0.91,-124.83)  409.98                80