Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 25.  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)
 10/25/2021   18:19:11   (  -0.34,-128.36) (   0.55,-132.31)  450.76                80
 10/26/2021   18:01:12   (  -0.33,-128.37) (  -0.55,-127.31)  119.74                80
 10/28/2021   06:20:13   (   0.33,-128.37) (  -0.43,-131.92)  403.54                80
 10/29/2021   05:57:11   (   0.33,-128.38) (   0.67,-126.92)  166.54                63
 10/30/2021   18:15:46   (  -0.32,-128.40) (   0.33,-131.49)  350.91                80
 10/31/2021   17:57:47   (  -0.32,-128.41) (  -0.77,-126.49)  219.01                80
 11/02/2021   06:16:47   (   0.32,-128.41) (  -0.26,-131.09)  304.77                80
 11/03/2021   05:53:27   (   0.32,-128.41) (   0.84,-126.09)  264.71                80
 11/04/2021   18:12:20   (  -0.32,-128.43) (   0.16,-130.66)  253.79                80
 11/05/2021   17:54:20   (  -0.32,-128.43) (  -0.94,-125.66)  315.32                80
 11/07/2021   06:13:21   (   0.31,-128.41) (  -0.08,-130.26)  209.63                80