Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 12 26.  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)
 12/26/2021   05:56:39   (   0.11,-128.01) (   0.35,-126.86)  130.51                80
 12/27/2021   18:18:10   (  -0.10,-128.06) (   0.65,-131.42)  383.22                80
 12/28/2021   17:54:51   (  -0.10,-128.08) (  -0.48,-126.43)  188.64                80
 12/30/2021   06:16:30   (   0.09,-128.11) (  -0.57,-131.02)  331.68                80
 12/31/2021   05:53:11   (   0.10,-128.13) (   0.57,-126.03)  239.53                80
 01/01/2022   18:14:42   (  -0.09,-128.17) (   0.43,-130.59)  275.81                80
 01/02/2022   17:51:21   (  -0.09,-128.18) (  -0.65,-125.59)  295.17                80
 01/04/2022   06:13:02   (   0.08,-128.20) (  -0.34,-130.19)  226.30                80
 01/05/2022   05:49:41   (   0.08,-128.21) (   0.74,-125.19)  344.52                80
 01/06/2022   18:11:12   (  -0.06,-128.25) (   0.24,-129.75)  171.19                80
 01/07/2022   17:47:52   (  -0.07,-128.26) (  -0.84,-124.75)  399.80                80