Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 8 8.  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)
 08/08/2021   05:53:17   (   0.07,-128.08) (   0.51,-126.04)  231.72                80
 08/09/2021   18:14:49   (  -0.04,-128.04) (   0.51,-130.60)  291.53                80
 08/10/2021   17:51:30   (  -0.07,-128.06) (  -0.59,-125.61)  279.32                80
 08/12/2021   06:13:10   (   0.04,-128.16) (  -0.44,-130.20)  233.18                80
 08/13/2021   05:49:52   (   0.06,-128.17) (   0.72,-125.21)  336.78                80
 08/14/2021   18:11:23   (  -0.03,-128.12) (   0.34,-129.76)  187.70                80
 08/15/2021   17:48:05   (  -0.05,-128.13) (  -0.81,-124.78)  382.42                80
 08/17/2021   06:09:45   (   0.02,-128.22) (  -0.22,-129.37)  130.84                80
 08/18/2021   05:46:25   (   0.04,-128.22) (   0.88,-124.37)  438.20                80
 08/19/2021   18:07:57   (  -0.01,-128.16) (   0.17,-128.93)   88.01                80
 08/20/2021   17:44:38   (  -0.04,-128.16) (  -0.99,-123.94)  481.35                80