Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 12 24.  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)
 12/25/2021   06:19:59   (   0.10,-127.98) (  -0.77,-131.85)  441.69                80
 12/26/2021   05:56:39   (   0.11,-128.00) (   0.36,-126.86)  130.32                80
 12/27/2021   18:18:10   (  -0.10,-128.05) (   0.64,-131.42)  383.57                80
 12/28/2021   17:54:51   (  -0.10,-128.08) (  -0.49,-126.43)  188.22                80
 12/30/2021   06:16:30   (   0.09,-128.11) (  -0.56,-131.02)  332.23                80
 12/31/2021   05:53:11   (   0.10,-128.12) (   0.57,-126.03)  238.86                80
 01/01/2022   18:14:41   (  -0.09,-128.16) (   0.48,-130.58)  276.66                80
 01/02/2022   17:51:22   (  -0.09,-128.17) (  -0.66,-125.59)  294.21                80
 01/04/2022   06:13:01   (   0.08,-128.19) (  -0.39,-130.18)  227.35                80
 01/05/2022   05:49:41   (   0.08,-128.20) (   0.75,-125.19)  343.34                80
 01/06/2022   18:11:12   (  -0.07,-128.23) (   0.30,-129.74)  172.58                80