Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 7 30.  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)
 07/31/2021   17:58:21   (  -0.09,-127.84) (  -0.21,-127.28)   64.64                80
 08/02/2021   06:20:02   (   0.07,-127.95) (  -0.82,-131.87)  446.91                80
 08/03/2021   05:56:43   (   0.08,-127.97) (   0.33,-126.88)  124.15                80
 08/04/2021   18:18:14   (  -0.06,-127.94) (   0.74,-131.43)  397.95                80
 08/05/2021   17:54:56   (  -0.08,-127.97) (  -0.41,-126.45)  173.48                80
 08/07/2021   06:16:36   (   0.05,-128.07) (  -0.61,-131.04)  338.67                80
 08/08/2021   05:53:18   (   0.08,-128.08) (   0.54,-126.05)  231.64                80
 08/09/2021   18:14:49   (  -0.05,-128.04) (   0.53,-130.60)  291.96                80
 08/10/2021   17:51:31   (  -0.08,-128.06) (  -0.63,-125.62)  278.86                80
 08/12/2021   06:13:11   (   0.05,-128.16) (  -0.40,-130.21)  233.33                80