Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 8 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)
 08/09/2021   18:14:49   (  -0.04,-128.04) (   0.51,-130.60)  291.24                80
 08/10/2021   17:51:31   (  -0.07,-128.07) (  -0.64,-125.62)  279.68                80
 08/12/2021   06:13:10   (   0.04,-128.16) (  -0.45,-130.20)  232.77                80
 08/13/2021   05:49:52   (   0.06,-128.17) (   0.71,-125.21)  337.27                80
 08/14/2021   18:11:23   (  -0.03,-128.13) (   0.35,-129.76)  187.07                80
 08/15/2021   17:48:04   (  -0.05,-128.14) (  -0.81,-124.78)  383.13                80
 08/17/2021   06:09:45   (   0.02,-128.23) (  -0.22,-129.37)  130.06                80
 08/18/2021   05:46:25   (   0.04,-128.23) (   0.88,-124.37)  439.04                80
 08/19/2021   18:07:57   (  -0.01,-128.16) (   0.18,-128.92)   87.03                80
 08/20/2021   17:44:38   (  -0.04,-128.17) (  -0.98,-123.94)  482.41                80
 08/22/2021   06:06:18   (   0.01,-128.26) (  -0.05,-128.53)   30.95                80