Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 12 7.  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)
 12/07/2021   05:49:54   (   0.20,-128.01) (   0.82,-125.22)  317.85                80
 12/08/2021   18:11:25   (  -0.18,-127.98) (   0.22,-129.78)  204.25                80
 12/09/2021   17:48:06   (  -0.18,-127.95) (  -0.91,-124.78)  361.49                80
 12/11/2021   06:09:45   (   0.17,-127.88) (  -0.14,-129.37)  169.24                80
 12/12/2021   05:46:24   (   0.18,-127.85) (   0.93,-124.37)  396.45                80
 12/13/2021   18:07:56   (  -0.16,-127.83) (   0.11,-128.93)  125.79                80
 12/14/2021   17:44:36   (  -0.17,-127.80) (  -1.02,-123.93)  439.72                80
 12/16/2021   06:06:15   (   0.16,-127.72) (  -0.02,-128.52)   91.58                80
 12/17/2021   05:42:56   (   0.16,-127.68) (   1.10,-123.53)  473.49                80
 12/18/2021   18:04:27   (  -0.15,-127.65) (  -0.08,-128.09)   49.87                80