Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 6 13.  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)
 06/13/2021   06:07:21   (   0.10,-128.46) (   0.05,-128.61)   16.68                80
 06/15/2021   18:05:33   (  -0.10,-128.45) (  -0.19,-128.18)   31.62                80
 06/17/2021   06:24:32   (   0.11,-128.44) (  -0.89,-132.77)  493.96                80
 06/18/2021   06:01:13   (   0.11,-128.43) (   0.24,-127.78)   73.66                80
 06/19/2021   18:20:04   (  -0.11,-128.41) (   0.76,-132.34)  448.14                80
 06/20/2021   18:02:05   (  -0.11,-128.40) (  -0.37,-127.35)  119.88                80
 06/22/2021   06:21:04   (   0.11,-128.38) (  -0.69,-131.94)  405.75                80
 06/23/2021   05:57:44   (   0.11,-128.36) (   0.44,-126.95)  160.97                80
 06/24/2021   18:16:36   (  -0.11,-128.32) (   0.57,-131.51)  363.09                80
 06/25/2021   17:58:35   (  -0.12,-128.30) (  -0.50,-126.51)  203.97                80