Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 19.  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)
 03/20/2021   06:12:31   (  -0.15,-128.37) (  -0.57,-130.16)  204.43                80
 03/21/2021   05:49:12   (  -0.14,-128.36) (   0.56,-125.17)  364.24                80
 03/22/2021   18:08:04   (   0.14,-128.44) (   0.41,-129.74)  147.19                80
 03/23/2021   17:50:04   (   0.14,-128.44) (  -0.67,-124.73)  421.37                80
 03/25/2021   06:09:03   (  -0.14,-128.34) (  -0.34,-129.33)  112.55                80
 03/26/2021   05:45:43   (  -0.14,-128.33) (   0.74,-124.33)  455.57                80
 03/27/2021   18:04:35   (   0.14,-128.40) (   0.23,-128.90)   56.84                80
 03/30/2021   06:05:34   (  -0.14,-128.28) (  -0.16,-128.49)   23.21                80
 04/01/2021   18:03:46   (   0.13,-128.32) (   0.05,-128.06)   30.69                80