Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 10.  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)
 10/10/2021   05:52:36   (   0.34,-128.01) (   0.95,-125.22)  317.41                80
 10/11/2021   18:08:48   (  -0.35,-128.05) (   0.04,-129.79)  198.52                80
 10/12/2021   17:50:49   (  -0.34,-128.08) (  -1.05,-124.79)  373.67                80
 10/14/2021   06:07:10   (   0.34,-128.12) (   0.05,-129.40)  145.53                80
 10/15/2021   05:49:11   (   0.34,-128.15) (   1.20,-124.41)  426.42                80
 10/16/2021   18:05:23   (  -0.34,-128.18) (  -0.15,-128.96)   90.07                80
 10/17/2021   17:47:24   (  -0.34,-128.20) (  -1.30,-123.98)  481.98                80
 10/19/2021   06:03:45   (   0.35,-128.25) (   0.25,-128.57)   37.11                80
 10/21/2021   18:04:38   (  -0.35,-128.30) (  -0.40,-128.15)   17.98                80