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)
 07/02/2021   18:00:56   (  -0.13,-128.19) (  -0.34,-127.32)   99.73                80
 07/04/2021   06:19:56   (   0.12,-128.16) (  -0.71,-131.91)  426.96                80
 07/05/2021   05:56:37   (   0.13,-128.13) (   0.38,-126.91)  138.75                80
 07/06/2021   18:15:29   (  -0.12,-128.08) (   0.65,-131.47)  386.39                80
 07/07/2021   17:57:31   (  -0.13,-128.05) (  -0.50,-126.48)  179.62                80
 07/09/2021   06:16:31   (   0.12,-128.01) (  -0.54,-131.07)  347.58                80
 07/10/2021   05:53:11   (   0.13,-127.98) (   0.54,-126.07)  217.22                80
 07/11/2021   18:12:04   (  -0.12,-127.91) (   0.49,-130.63)  309.83                80
 07/12/2021   17:54:05   (  -0.14,-127.88) (  -0.66,-125.64)  255.42                80
 07/14/2021   06:13:06   (   0.13,-127.84) (  -0.38,-130.23)  271.86                80
 07/15/2021   05:49:46   (   0.14,-127.80) (   0.71,-125.23)  292.48                80