Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 5 12.  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)
 05/13/2021   17:48:25   (   0.01,-128.12) (  -0.94,-123.97)  473.50                80
 05/15/2021   06:07:26   (  -0.00,-128.12) (  -0.13,-128.56)   51.24                80
 05/17/2021   18:05:37   (  -0.01,-128.21) (  -0.02,-128.13)    8.47                80
 05/20/2021   06:01:19   (   0.01,-128.23) (   0.12,-127.74)   55.39                80
 05/21/2021   18:20:10   (  -0.02,-128.28) (   0.90,-132.30)  458.21                80
 05/22/2021   18:02:10   (  -0.01,-128.31) (  -0.22,-127.31)  113.33                80
 05/24/2021   06:21:11   (   0.02,-128.31) (  -0.79,-131.91)  410.67                80
 05/25/2021   05:57:52   (   0.01,-128.32) (   0.33,-126.92)  159.67                80