Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 12 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)
 12/01/2021   06:16:42   (   0.21,-128.17) (  -0.44,-131.06)  328.85                80
 12/02/2021   05:53:22   (   0.22,-128.15) (   0.68,-126.06)  237.60                80
 12/03/2021   18:14:53   (  -0.21,-128.14) (   0.37,-130.62)  283.49                80
 12/04/2021   17:51:34   (  -0.21,-128.11) (  -0.75,-125.62)  282.50                80
 12/06/2021   06:13:13   (   0.20,-128.04) (  -0.30,-130.21)  248.41                80
 12/07/2021   05:49:54   (   0.20,-128.00) (   0.82,-125.22)  317.22                80
 12/08/2021   18:11:25   (  -0.18,-127.98) (   0.22,-129.78)  204.74                80
 12/09/2021   17:48:06   (  -0.19,-127.95) (  -0.90,-124.78)  360.94                80
 12/11/2021   06:09:45   (   0.17,-127.88) (  -0.14,-129.37)  170.09                80
 12/12/2021   05:46:25   (   0.18,-127.85) (   0.98,-124.38)  395.50                80
 12/13/2021   18:07:57   (  -0.16,-127.82) (   0.06,-128.94)  126.64                80
 12/14/2021   17:44:36   (  -0.17,-127.79) (  -1.01,-123.93)  438.83                80