Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 8.  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)
 10/09/2021   06:10:35   (   0.35,-127.98) (  -0.16,-130.22)  255.24                80
 10/10/2021   05:52:37   (   0.34,-128.01) (   0.99,-125.23)  317.22                80
 10/11/2021   18:08:48   (  -0.35,-128.05) (   0.06,-129.79)  198.78                80
 10/12/2021   17:50:49   (  -0.34,-128.07) (  -1.09,-124.80)  373.36                80
 10/14/2021   06:07:11   (   0.35,-128.12) (   0.08,-129.40)  146.03                80
 10/15/2021   05:49:11   (   0.34,-128.14) (   1.17,-124.40)  425.83                80
 10/16/2021   18:05:23   (  -0.35,-128.17) (  -0.17,-128.97)   90.68                80
 10/17/2021   17:47:24   (  -0.34,-128.20) (  -1.26,-123.97)  481.26                80
 10/19/2021   06:03:45   (   0.35,-128.24) (   0.26,-128.57)   37.96                80
 10/21/2021   18:04:39   (  -0.35,-128.30) (  -0.40,-128.15)   16.82                80