Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 3.  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) (   0.11,-128.07)   28.78                80
 03/06/2021   05:59:39   (  -0.14,-128.28) (  -0.01,-127.67)   68.94                80
 03/07/2021   18:21:10   (   0.15,-128.39) (   1.04,-132.23)  439.11                80
 03/08/2021   17:57:50   (   0.14,-128.40) (  -0.09,-127.24)  131.27                80
 03/10/2021   06:19:30   (  -0.15,-128.33) (  -0.93,-131.84)  399.56                80
 03/11/2021   05:56:10   (  -0.14,-128.34) (   0.20,-126.84)  170.69                80
 03/12/2021   18:15:06   (   0.15,-128.44) (   0.83,-131.40)  337.67                76
 03/13/2021   17:54:22   (   0.15,-128.46) (  -0.31,-126.41)  232.78                80
 03/15/2021   06:16:01   (  -0.15,-128.39) (  -0.71,-131.01)  298.00                80
 03/16/2021   05:52:41   (  -0.15,-128.39) (   0.36,-126.00)  272.04                80