Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 1.  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)
 03/03/2021   18:01:19   (   0.15,-128.33) (   0.10,-128.08)   28.57                80
 03/06/2021   05:59:39   (  -0.14,-128.28) (   0.00,-127.68)   68.93                80
 03/07/2021   18:21:10   (   0.15,-128.39) (   1.02,-132.24)  439.28                80
 03/08/2021   17:57:51   (   0.14,-128.40) (  -0.11,-127.25)  131.06                80
 03/10/2021   06:19:30   (  -0.15,-128.33) (  -0.91,-131.84)  399.61                80
 03/11/2021   05:56:10   (  -0.14,-128.34) (   0.16,-126.84)  170.65                80
 03/12/2021   18:15:02   (   0.15,-128.44) (   0.81,-131.41)  337.91                80
 03/13/2021   17:54:22   (   0.14,-128.45) (  -0.33,-126.42)  232.54                80
 03/15/2021   06:16:01   (  -0.15,-128.38) (  -0.75,-131.00)  298.08                80