Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 7 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)
 07/19/2021   06:09:38   (   0.11,-127.65) (  -0.29,-129.37)  196.81                80
 07/20/2021   05:46:20   (   0.12,-127.60) (   0.86,-124.38)  367.02                80
 07/21/2021   18:05:11   (  -0.11,-127.51) (   0.23,-128.93)  162.22                80
 07/22/2021   17:47:13   (  -0.12,-127.47) (  -0.92,-123.94)  401.91                80
 07/24/2021   06:06:12   (   0.10,-127.42) (  -0.17,-128.52)  126.12                80
 07/25/2021   05:42:54   (   0.12,-127.37) (   0.98,-123.54)  437.17                80
 07/26/2021   18:01:46   (  -0.11,-127.28) (   0.05,-128.10)   93.06                80
 07/27/2021   17:43:46   (  -0.12,-127.23) (  -1.04,-123.10)  471.03                80
 07/29/2021   06:02:47   (   0.10,-127.19) (   0.02,-127.69)   56.21                80
 07/31/2021   18:00:58   (  -0.10,-127.03) (  -0.02,-127.24)   24.20                80