Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 7 19.  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)
 07/20/2021   05:46:19   (   0.12,-127.60) (   0.81,-124.37)  366.99                80
 07/21/2021   18:05:11   (  -0.10,-127.51) (   0.22,-128.93)  161.93                80
 07/22/2021   17:47:13   (  -0.12,-127.47) (  -0.93,-123.95)  402.22                80
 07/24/2021   06:06:12   (   0.10,-127.42) (  -0.16,-128.53)  125.99                80
 07/25/2021   05:42:54   (   0.12,-127.37) (   1.00,-123.54)  437.29                80
 07/26/2021   18:03:44   (  -0.11,-127.28) (   0.09,-128.09)   92.60                39
 07/27/2021   17:43:47   (  -0.12,-127.24) (  -1.06,-123.10)  471.50                80
 07/29/2021   06:02:46   (   0.10,-127.19) (  -0.03,-127.68)   55.92                80
 07/31/2021   18:00:59   (  -0.10,-127.04) (  -0.04,-127.24)   23.45                80