Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 6 8.  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)
 06/08/2021   06:10:49   (   0.08,-128.47) (  -0.13,-129.44)  110.04                80
 06/09/2021   05:47:30   (   0.08,-128.47) (   1.00,-124.45)  458.66                80
 06/10/2021   18:06:20   (  -0.09,-128.48) (   0.04,-129.00)   59.32                80
 06/13/2021   06:07:21   (   0.09,-128.46) (   0.05,-128.61)   16.96                80
 06/15/2021   18:05:33   (  -0.10,-128.45) (  -0.19,-128.18)   31.21                80
 06/17/2021   06:24:32   (   0.11,-128.44) (  -0.89,-132.77)  494.52                80
 06/18/2021   06:01:13   (   0.11,-128.42) (   0.24,-127.78)   73.03                80
 06/19/2021   18:20:04   (  -0.11,-128.40) (   0.76,-132.34)  448.88                80
 06/20/2021   18:02:05   (  -0.11,-128.39) (  -0.37,-127.35)  119.10                80