Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 6.  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)
 09/06/2021   05:56:03   (   0.23,-128.24) (   0.69,-126.06)  247.25                80
 09/07/2021   18:12:15   (  -0.27,-128.18) (   0.27,-130.63)  279.13                80
 09/08/2021   17:54:16   (  -0.25,-128.17) (  -0.83,-125.64)  289.60                80
 09/10/2021   06:10:37   (   0.28,-128.20) (  -0.16,-130.24)  232.08                80
 09/11/2021   05:52:36   (   0.26,-128.19) (   0.89,-125.23)  336.04                80
 09/12/2021   18:08:49   (  -0.29,-128.12) (   0.07,-129.80)  191.66                80
 09/13/2021   17:50:48   (  -0.27,-128.10) (  -0.98,-124.79)  376.16                80
 09/15/2021   06:07:10   (   0.29,-128.11) (  -0.01,-129.40)  146.61                80
 09/16/2021   05:49:10   (   0.27,-128.09) (   1.10,-124.40)  420.61                80
 09/17/2021   18:05:21   (  -0.30,-128.01) (  -0.09,-128.96)  108.18                80
 09/18/2021   17:47:22   (  -0.28,-127.99) (  -1.20,-123.96)  459.18                80