Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 7 27.  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)
 07/29/2021   06:00:08   (   0.10,-127.82) (   0.11,-127.71)   12.92                80
 07/31/2021   17:58:22   (  -0.09,-127.85) (  -0.24,-127.28)   65.03                80
 08/02/2021   06:20:02   (   0.07,-127.96) (  -0.78,-131.88)  446.13                80
 08/03/2021   05:56:43   (   0.09,-127.98) (   0.32,-126.88)  125.09                80
 08/04/2021   18:18:15   (  -0.06,-127.95) (   0.70,-131.44)  397.00                80
 08/05/2021   17:54:56   (  -0.08,-127.98) (  -0.40,-126.44)  174.63                80
 08/07/2021   06:16:36   (   0.06,-128.08) (  -0.63,-131.03)  337.07                80
 08/08/2021   05:53:17   (   0.08,-128.10) (   0.53,-126.05)  233.38                80
 08/09/2021   18:14:49   (  -0.05,-128.06) (   0.54,-130.60)  290.26                80