Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 10.  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)
 05/10/2021   17:56:58   (   0.02,-128.03) (  -0.35,-126.42)  183.18                80
 05/12/2021   06:16:00   (  -0.01,-128.03) (  -0.67,-131.02)  340.75                80
 05/13/2021   05:52:42   (  -0.02,-128.06) (   0.44,-126.03)  231.01                80
 05/14/2021   18:11:35   (   0.01,-128.14) (   0.54,-130.60)  279.96                80
 05/15/2021   17:53:37   (   0.01,-128.17) (  -0.58,-125.61)  292.08                80
 05/17/2021   06:12:39   (  -0.00,-128.17) (  -0.44,-130.21)  232.53                80
 05/18/2021   05:49:20   (  -0.01,-128.18) (   0.68,-125.22)  338.44                80
 05/19/2021   18:08:13   (  -0.00,-128.25) (   0.36,-129.78)  174.24                80
 05/20/2021   17:50:14   (   0.00,-128.28) (  -0.76,-124.79)  397.30                80
 05/22/2021   06:09:17   (   0.00,-128.27) (  -0.25,-129.39)  127.22                80
 05/23/2021   05:45:58   (  -0.00,-128.29) (   0.86,-124.40)  443.34                80