Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 4 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)
 04/13/2021   18:06:26   (   0.11,-128.11) (   0.26,-128.92)   92.63                80
 04/14/2021   17:48:27   (   0.11,-128.08) (  -0.84,-123.93)  473.66                80
 04/16/2021   06:07:26   (  -0.10,-127.94) (  -0.23,-128.51)   64.89                80
 04/18/2021   18:02:59   (   0.09,-127.95) (   0.12,-128.09)   15.78                80
 04/21/2021   06:03:59   (  -0.08,-127.77) (  -0.03,-127.69)   10.81                80
 04/23/2021   18:02:11   (   0.08,-127.76) (  -0.04,-127.25)   57.68                80
 04/25/2021   06:21:12   (  -0.07,-127.62) (  -1.00,-131.85)  481.24                80
 04/26/2021   05:57:52   (  -0.08,-127.58) (   0.11,-126.85)   83.20                80