Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 27.  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)
 10/28/2021   06:20:13   (   0.33,-128.37) (  -0.44,-131.92)  403.51                80
 10/29/2021   05:59:26   (   0.33,-128.38) (   0.66,-126.92)  166.60                72
 10/30/2021   18:15:46   (  -0.32,-128.41) (   0.34,-131.49)  350.62                80
 10/31/2021   17:57:46   (  -0.32,-128.41) (  -0.76,-126.49)  219.31                80
 11/02/2021   06:16:47   (   0.32,-128.41) (  -0.27,-131.09)  304.65                80
 11/03/2021   05:53:27   (   0.32,-128.42) (   0.83,-126.09)  264.86                80
 11/04/2021   18:12:20   (  -0.32,-128.43) (   0.17,-130.66)  253.40                80
 11/05/2021   17:54:20   (  -0.32,-128.43) (  -0.93,-125.66)  315.72                80
 11/07/2021   06:13:20   (   0.31,-128.42) (  -0.09,-130.26)  209.43                80
 11/08/2021   05:50:01   (   0.31,-128.41) (   1.02,-125.26)  359.10                80
 11/09/2021   18:08:53   (  -0.30,-128.41) (  -0.01,-129.82)  160.62                80