Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 6 15.  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   06:12:56   (   0.10,-128.45) (  -0.32,-130.25)  204.96                80
 06/16/2021   05:49:38   (   0.11,-128.44) (   0.82,-125.26)  362.79                80
 06/17/2021   18:08:30   (  -0.11,-128.44) (   0.19,-129.82)  157.53                80
 06/18/2021   17:50:31   (  -0.11,-128.43) (  -0.89,-124.82)  410.79                80
 06/20/2021   06:09:32   (   0.11,-128.41) (  -0.12,-129.42)  115.09                80
 06/21/2021   05:46:14   (   0.11,-128.39) (   1.02,-124.43)  452.07                80
 06/22/2021   18:05:06   (  -0.11,-128.37) (  -0.00,-128.99)   70.22                80
 06/23/2021   17:47:06   (  -0.11,-128.35) (  -1.08,-123.99)  497.21                80
 06/25/2021   06:06:08   (   0.11,-128.33) (   0.08,-128.59)   29.42                80
 06/27/2021   18:04:20   (  -0.12,-128.26) (  -0.14,-128.15)   13.00                80