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   (   0.02,-127.85) (  -0.13,-127.24)   70.53                80
 05/07/2021   06:19:22   (  -0.02,-127.86) (  -0.89,-131.84)  453.29                80
 05/08/2021   05:56:03   (  -0.03,-127.89) (   0.22,-126.85)  119.36                80
 05/09/2021   18:14:57   (   0.02,-128.00) (   0.76,-131.42)  389.14                80
 05/10/2021   17:56:58   (   0.03,-128.03) (  -0.35,-126.42)  183.96                80
 05/12/2021   06:16:00   (  -0.02,-128.04) (  -0.67,-131.03)  340.03                80
 05/13/2021   05:52:42   (  -0.03,-128.06) (   0.44,-126.03)  231.89                80
 05/14/2021   18:11:35   (   0.02,-128.15) (   0.54,-130.60)  278.53                80
 05/15/2021   17:53:37   (   0.02,-128.18) (  -0.58,-125.61)  293.69                80
 05/17/2021   06:12:39   (  -0.01,-128.18) (  -0.44,-130.21)  230.95                80
 05/18/2021   05:49:21   (  -0.02,-128.20) (   0.68,-125.22)  340.17                80