Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 4 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 04/11/2021   06:10:53   (  -0.11,-128.08) (  -0.38,-129.35)  144.35                80
 04/12/2021   05:47:33   (  -0.11,-128.05) (   0.72,-124.35)  422.05                80
 04/13/2021   18:06:26   (   0.11,-128.11) (   0.28,-128.92)   92.31                80
 04/14/2021   17:48:26   (   0.11,-128.08) (  -0.82,-123.92)  474.02                80
 04/16/2021   06:07:25   (  -0.10,-127.95) (  -0.25,-128.51)   64.60                80
 04/18/2021   18:02:58   (   0.09,-127.95) (   0.14,-128.08)   15.16                80
 04/21/2021   06:01:19   (  -0.09,-127.78) (  -0.06,-127.68)   11.15                80
 04/23/2021   18:02:11   (   0.08,-127.77) (  -0.01,-127.25)   58.96                80