Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 24.  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)
 04/24/2021   05:45:28   (  -0.07,-127.66) (   0.66,-124.30)  383.07                80
 04/25/2021   18:04:21   (   0.07,-127.69) (   0.35,-128.86)  133.64                80
 04/26/2021   17:46:23   (   0.07,-127.66) (  -0.76,-123.87)  431.31                80
 04/28/2021   06:05:24   (  -0.06,-127.51) (  -0.31,-128.46)  109.29                80
 04/29/2021   05:42:06   (  -0.07,-127.46) (   0.80,-123.47)  454.68                80
 04/30/2021   18:00:59   (   0.06,-127.47) (   0.20,-128.03)   63.93                80
 05/03/2021   06:02:03   (  -0.05,-127.28) (  -0.10,-127.64)   41.08                80
 05/05/2021   18:00:17   (   0.05,-127.23) (   0.04,-127.20)    3.12                80