Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 6.  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)
 10/06/2021   18:12:12   (  -0.35,-127.89) (   0.26,-130.61)  309.82                80
 10/07/2021   17:54:13   (  -0.34,-127.93) (  -0.85,-125.61)  263.39                80
 10/09/2021   06:10:34   (   0.35,-127.98) (  -0.12,-130.22)  255.02                80
 10/10/2021   05:52:34   (   0.34,-128.01) (   0.94,-125.21)  317.57                80
 10/11/2021   18:08:45   (  -0.35,-128.04) (   0.07,-129.77)  198.10                80
 10/12/2021   17:50:46   (  -0.34,-128.07) (  -1.05,-124.78)  374.18                80
 10/14/2021   06:07:07   (   0.35,-128.11) (   0.09,-129.39)  145.14                80
 10/15/2021   05:49:06   (   0.34,-128.13) (   1.15,-124.38)  426.89                80
 10/16/2021   18:05:18   (  -0.35,-128.16) (  -0.14,-128.94)   89.33                80
 10/17/2021   17:47:18   (  -0.34,-128.19) (  -1.26,-123.95)  482.82                80
 10/19/2021   06:03:39   (   0.35,-128.23) (   0.25,-128.55)   36.33                80