Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 8 28.  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)
 08/28/2021   18:19:07   (  -0.22,-128.24) (   0.71,-132.29)  462.20                80
 08/29/2021   18:01:08   (  -0.20,-128.24) (  -0.40,-127.30)  107.71                80
 08/31/2021   06:17:29   (   0.23,-128.28) (  -0.59,-131.90)  412.76                80
 09/01/2021   05:59:29   (   0.21,-128.27) (   0.52,-126.90)  156.35                80
 09/02/2021   18:15:42   (  -0.24,-128.22) (   0.46,-131.47)  369.76                80
 09/03/2021   17:57:41   (  -0.22,-128.21) (  -0.59,-126.46)  199.30                80
 09/05/2021   06:14:03   (   0.25,-128.25) (  -0.40,-131.07)  321.89                80
 09/06/2021   05:56:03   (   0.23,-128.23) (   0.71,-126.07)  246.58                80
 09/07/2021   18:12:15   (  -0.27,-128.17) (   0.26,-130.64)  280.55                80
 09/08/2021   17:54:15   (  -0.25,-128.16) (  -0.79,-125.63)  288.00                80
 09/10/2021   06:10:36   (   0.28,-128.19) (  -0.20,-130.23)  233.51                80