Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 6 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)
 06/04/2021   05:50:57   (   0.07,-128.45) (   0.76,-125.27)  361.77                80
 06/05/2021   18:09:48   (  -0.08,-128.48) (   0.21,-129.84)  153.79                80
 06/06/2021   17:51:49   (  -0.08,-128.49) (  -0.91,-124.84)  416.21                80
 06/08/2021   06:10:49   (   0.08,-128.47) (  -0.14,-129.44)  109.98                80
 06/09/2021   05:47:30   (   0.08,-128.47) (   0.99,-124.45)  458.81                80
 06/10/2021   18:06:20   (  -0.09,-128.49) (   0.05,-129.00)   58.79                80
 06/13/2021   06:07:21   (   0.09,-128.47) (   0.04,-128.61)   16.56                80
 06/15/2021   18:05:33   (  -0.10,-128.46) (  -0.17,-128.18)   32.13                80
 06/17/2021   06:24:33   (   0.11,-128.45) (  -0.85,-132.78)  493.46                80