Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 9.  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   06:19:29   (  -0.15,-128.32) (  -0.95,-131.83)  400.40                80
 03/11/2021   05:56:10   (  -0.15,-128.33) (   0.18,-126.84)  169.71                80
 03/12/2021   18:17:41   (   0.15,-128.43) (   0.84,-131.40)  338.55                80
 03/13/2021   17:54:22   (   0.15,-128.44) (  -0.29,-126.41)  231.70                80
 03/15/2021   06:16:01   (  -0.15,-128.37) (  -0.73,-131.00)  299.86                80
 03/16/2021   05:52:42   (  -0.15,-128.37) (   0.41,-126.01)  270.03                80
 03/17/2021   18:11:33   (   0.15,-128.47) (   0.62,-130.57)  239.06                80
 03/18/2021   17:50:53   (   0.15,-128.48) (  -0.51,-125.58)  330.57                80
 03/20/2021   06:12:32   (  -0.15,-128.39) (  -0.56,-130.16)  202.06                80
 03/21/2021   05:49:12   (  -0.14,-128.39) (   0.58,-125.17)  366.95                80
 03/22/2021   18:08:05   (   0.14,-128.47) (   0.40,-129.74)  143.71                80