Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 6 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)
 06/15/2021   06:12:57   (   0.10,-128.45) (  -0.27,-130.26)  205.02                80
 06/16/2021   05:49:38   (   0.11,-128.44) (   0.81,-125.26)  362.70                80
 06/17/2021   18:08:30   (  -0.11,-128.43) (   0.21,-129.82)  157.79                80
 06/18/2021   17:50:31   (  -0.11,-128.43) (  -0.93,-124.83)  410.47                80
 06/20/2021   06:09:32   (   0.11,-128.41) (  -0.14,-129.42)  115.40                80
 06/21/2021   05:46:13   (   0.11,-128.39) (   1.01,-124.43)  451.74                80
 06/22/2021   18:05:06   (  -0.11,-128.37) (   0.01,-128.99)   70.67                80
 06/23/2021   17:47:06   (  -0.11,-128.35) (  -1.07,-123.99)  496.67                80
 06/25/2021   06:06:07   (   0.11,-128.32) (   0.07,-128.59)   29.84                80
 06/27/2021   18:04:20   (  -0.12,-128.26) (  -0.13,-128.15)   12.42                80