Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 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)
 05/09/2021   18:14:56   (   0.01,-127.99) (   0.79,-131.41)  389.68                80
 05/10/2021   17:56:58   (   0.02,-128.03) (  -0.32,-126.42)  183.28                80
 05/12/2021   06:16:00   (  -0.01,-128.03) (  -0.69,-131.02)  340.70                80
 05/13/2021   05:52:41   (  -0.02,-128.06) (   0.42,-126.03)  231.09                80
 05/14/2021   18:11:35   (   0.01,-128.14) (   0.56,-130.60)  279.74                80
 05/15/2021   17:53:36   (   0.01,-128.17) (  -0.56,-125.60)  292.31                80
 05/17/2021   06:12:39   (  -0.00,-128.17) (  -0.46,-130.21)  232.32                80
 05/18/2021   05:49:20   (  -0.01,-128.19) (   0.65,-125.21)  338.66                80
 05/19/2021   18:08:13   (  -0.00,-128.26) (   0.32,-129.79)  173.89                80
 05/20/2021   17:50:15   (   0.00,-128.28) (  -0.79,-124.79)  397.67                80
 05/22/2021   06:09:17   (   0.00,-128.28) (  -0.22,-129.40)  126.91                80