Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 7 21.  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)
 07/21/2021   18:05:11   (  -0.10,-127.51) (   0.24,-128.93)  161.86                80
 07/22/2021   17:47:13   (  -0.12,-127.47) (  -0.91,-123.94)  402.30                80
 07/24/2021   06:06:12   (   0.10,-127.42) (  -0.17,-128.52)  126.07                80
 07/25/2021   05:42:53   (   0.12,-127.37) (   0.98,-123.54)  437.23                80
 07/26/2021   18:01:46   (  -0.11,-127.28) (   0.05,-128.10)   92.55                80
 07/27/2021   17:43:46   (  -0.12,-127.24) (  -1.04,-123.10)  471.57                80
 07/29/2021   06:02:47   (   0.10,-127.19) (   0.02,-127.69)   56.00                80
 07/31/2021   18:00:58   (  -0.10,-127.04) (  -0.02,-127.24)   23.53                80
 08/03/2021   05:56:39   (   0.09,-126.95) (   0.09,-126.83)   12.75                80