Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 12 29.  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)
 12/30/2021   06:16:30   (   0.09,-128.11) (  -0.58,-131.01)  331.13                80
 12/31/2021   05:53:10   (   0.10,-128.14) (   0.55,-126.02)  240.32                80
 01/01/2022   18:14:42   (  -0.08,-128.17) (   0.44,-130.59)  274.84                80
 01/02/2022   17:51:22   (  -0.09,-128.19) (  -0.69,-125.60)  296.30                80
 01/04/2022   06:13:01   (   0.07,-128.21) (  -0.36,-130.19)  224.79                80
 01/05/2022   05:49:42   (   0.08,-128.23) (   0.78,-125.20)  346.24                80
 01/06/2022   18:11:12   (  -0.06,-128.26) (   0.26,-129.75)  169.21                80
 01/07/2022   17:47:53   (  -0.07,-128.28) (  -0.88,-124.76)  401.93                80
 01/09/2022   06:09:32   (   0.06,-128.30) (  -0.17,-129.35)  119.13                80
 01/10/2022   05:46:13   (   0.06,-128.32) (   0.97,-124.36)  451.78                80
 01/11/2022   18:07:43   (  -0.05,-128.35) (   0.06,-128.91)   64.16                80