Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 9 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)
 09/13/2021   06:03:04   (   0.28,-128.13) (   0.35,-127.76)   42.02                80
 09/14/2021   18:19:14   (  -0.31,-128.04) (   0.63,-132.32)  487.58                80
 09/15/2021   18:01:14   (  -0.29,-128.01) (  -0.46,-127.32)   79.35                80
 09/17/2021   06:17:34   (   0.31,-128.02) (  -0.54,-131.92)  444.48                80
 09/18/2021   05:59:34   (   0.30,-127.99) (   0.55,-126.92)  122.10                80
 09/19/2021   18:15:43   (  -0.32,-127.90) (   0.48,-131.48)  407.91                80
 09/20/2021   17:57:42   (  -0.31,-127.87) (  -0.61,-126.48)  158.86                80
 09/22/2021   06:14:03   (   0.33,-127.88) (  -0.40,-131.08)  364.67                80
 09/23/2021   05:56:02   (   0.32,-127.85) (   0.70,-126.08)  201.77                80
 09/24/2021   18:12:12   (  -0.34,-127.75) (   0.33,-130.63)  328.79                80
 09/25/2021   17:54:11   (  -0.32,-127.72) (  -0.77,-125.63)  237.49                80