Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 5.  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)
 05/05/2021   18:00:19   (   0.03,-127.85) (  -0.09,-127.23)   70.67                80
 05/07/2021   06:19:21   (  -0.02,-127.86) (  -0.92,-131.83)  453.13                80
 05/08/2021   05:56:03   (  -0.03,-127.89) (   0.19,-126.84)  119.59                80
 05/09/2021   18:14:56   (   0.02,-128.00) (   0.80,-131.41)  388.77                80
 05/10/2021   17:56:58   (   0.03,-128.04) (  -0.32,-126.42)  184.40                80
 05/12/2021   06:16:00   (  -0.02,-128.04) (  -0.70,-131.02)  339.56                80
 05/13/2021   05:52:41   (  -0.03,-128.07) (   0.41,-126.03)  232.42                80
 05/14/2021   18:11:35   (   0.02,-128.16) (   0.57,-130.60)  277.82                80
 05/15/2021   17:53:36   (   0.02,-128.19) (  -0.55,-125.60)  294.43                80
 05/17/2021   06:12:38   (  -0.01,-128.19) (  -0.47,-130.21)  230.14                80
 05/18/2021   05:49:20   (  -0.02,-128.21) (   0.64,-125.21)  341.02                80