Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 7 1.  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)
 07/01/2021   18:18:55   (  -0.12,-128.21) (   0.78,-132.31)  467.10                80
 07/02/2021   18:00:55   (  -0.13,-128.19) (  -0.30,-127.31)   99.76                80
 07/04/2021   06:19:56   (   0.12,-128.16) (  -0.74,-131.90)  426.89                80
 07/05/2021   05:56:37   (   0.13,-128.13) (   0.40,-126.91)  138.87                80
 07/06/2021   18:15:29   (  -0.12,-128.08) (   0.62,-131.47)  386.17                80
 07/07/2021   17:57:30   (  -0.13,-128.05) (  -0.46,-126.47)  179.89                80
 07/09/2021   06:16:30   (   0.12,-128.02) (  -0.58,-131.06)  347.23                80
 07/10/2021   05:53:12   (   0.13,-127.98) (   0.57,-126.07)  217.63                80
 07/11/2021   18:12:04   (  -0.12,-127.91) (   0.46,-130.63)  309.36                80
 07/12/2021   17:54:05   (  -0.14,-127.88) (  -0.63,-125.63)  255.95                80
 07/14/2021   06:13:05   (   0.13,-127.85) (  -0.41,-130.22)  271.21                80