Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 4 11.  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) (  -0.36,-129.35)  144.37                80
 04/12/2021   05:47:34   (  -0.11,-128.05) (   0.74,-124.36)  422.02                80
 04/13/2021   18:06:26   (   0.11,-128.11) (   0.27,-128.92)   92.50                80
 04/14/2021   17:48:26   (   0.11,-128.08) (  -0.84,-123.93)  473.82                80
 04/16/2021   06:07:26   (  -0.10,-127.95) (  -0.24,-128.51)   64.76                80
 04/18/2021   18:02:59   (   0.09,-127.95) (   0.13,-128.09)   15.40                80
 04/21/2021   06:03:59   (  -0.08,-127.78) (  -0.04,-127.69)   11.01                80
 04/23/2021   18:02:11   (   0.08,-127.76) (  -0.03,-127.25)   58.33                80