Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 8 17.  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)
 08/17/2021   06:09:45   (   0.01,-128.24) (  -0.24,-129.37)  128.02                80
 08/18/2021   05:46:26   (   0.04,-128.25) (   0.92,-124.38)  441.33                80
 08/19/2021   18:07:57   (  -0.00,-128.19) (   0.14,-128.93)   83.78                80
 08/20/2021   17:44:38   (  -0.03,-128.20) (  -0.96,-123.93)  486.02                80
 08/22/2021   06:06:18   (  -0.00,-128.29) (  -0.07,-128.53)   27.47                80
 08/24/2021   18:01:51   (   0.00,-128.23) (  -0.04,-128.09)   16.24                80
 08/26/2021   06:23:31   (  -0.04,-128.33) (  -1.00,-132.69)  496.29                80
 08/27/2021   06:00:13   (  -0.01,-128.33) (   0.16,-127.70)   72.82                80
 08/28/2021   18:21:43   (   0.05,-128.26) (   0.95,-132.24)  454.10                80
 08/29/2021   17:58:25   (   0.02,-128.26) (  -0.22,-127.26)  115.10                80