Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 8 18.  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)
 08/19/2021   18:07:57   (  -0.00,-128.19) (   0.16,-128.93)   83.68                80
 08/20/2021   17:44:38   (  -0.03,-128.20) (  -1.00,-123.94)  486.07                80
 08/22/2021   06:06:19   (  -0.00,-128.29) (  -0.04,-128.53)   27.52                80
 08/24/2021   18:01:51   (   0.00,-128.23) (  -0.01,-128.09)   16.32                80
 08/26/2021   06:23:31   (  -0.04,-128.33) (  -1.03,-132.68)  496.42                80
 08/27/2021   06:00:12   (  -0.01,-128.33) (   0.13,-127.70)   72.61                80
 08/28/2021   18:21:44   (   0.05,-128.26) (   0.91,-132.25)  454.16                80
 08/29/2021   17:58:24   (   0.03,-128.26) (  -0.19,-127.25)  115.04                80
 08/31/2021   06:20:04   (  -0.06,-128.35) (  -0.85,-131.84)  398.24                80