Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 5.  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)
 09/05/2021   06:14:03   (   0.25,-128.25) (  -0.39,-131.07)  321.50                80
 09/06/2021   05:56:03   (   0.23,-128.24) (   0.71,-126.07)  247.14                80
 09/07/2021   18:12:15   (  -0.27,-128.18) (   0.25,-130.64)  279.30                80
 09/08/2021   17:54:15   (  -0.25,-128.17) (  -0.80,-125.63)  289.39                80
 09/10/2021   06:10:36   (   0.28,-128.20) (  -0.19,-130.23)  232.39                80
 09/11/2021   05:52:37   (   0.26,-128.18) (   0.91,-125.24)  335.66                80
 09/12/2021   18:08:48   (  -0.29,-128.11) (   0.10,-129.79)  192.09                80
 09/13/2021   17:50:49   (  -0.27,-128.09) (  -1.00,-124.80)  375.66                80
 09/15/2021   06:07:10   (   0.29,-128.11) (   0.01,-129.40)  147.20                80
 09/16/2021   05:49:10   (   0.27,-128.08) (   1.12,-124.40)  419.98                80
 09/17/2021   18:05:22   (  -0.30,-128.00) (  -0.11,-128.96)  108.92                80
 09/18/2021   17:47:21   (  -0.28,-127.98) (  -1.16,-123.95)  458.41                80