Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 12 4.  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)
 12/04/2021   06:06:42   (   0.21,-128.10) (   0.08,-128.55)   51.55                80
 12/06/2021   18:04:56   (  -0.20,-128.05) (  -0.19,-128.12)    7.53                80
 12/09/2021   06:00:36   (   0.18,-127.95) (   0.24,-127.70)   27.99                80
 12/10/2021   18:22:08   (  -0.17,-127.92) (   0.80,-132.26)  494.08                80
 12/11/2021   17:58:49   (  -0.17,-127.89) (  -0.30,-127.26)   71.74                80
 12/13/2021   06:20:28   (   0.16,-127.82) (  -0.75,-131.85)  458.56                80
 12/14/2021   05:57:08   (   0.17,-127.79) (   0.36,-126.85)  107.00                80
 12/15/2021   18:18:41   (  -0.15,-127.76) (   0.67,-131.41)  415.57                80
 12/16/2021   17:55:21   (  -0.16,-127.73) (  -0.44,-126.41)  149.74                80