Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 4 18.  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)
 04/18/2021   18:02:58   (   0.09,-127.95) (   0.13,-128.08)   15.79                80
 04/21/2021   06:01:19   (  -0.08,-127.77) (  -0.05,-127.68)   10.45                80
 04/23/2021   18:02:11   (   0.08,-127.76) (  -0.02,-127.25)   57.82                80
 04/25/2021   06:21:11   (  -0.07,-127.62) (  -1.01,-131.84)  481.13                80
 04/26/2021   05:57:52   (  -0.08,-127.58) (   0.09,-126.85)   83.26                80
 04/27/2021   18:16:43   (   0.07,-127.58) (   0.93,-131.41)  435.86                80
 04/28/2021   17:58:44   (   0.07,-127.54) (  -0.18,-126.41)  128.55                80
 04/30/2021   06:17:44   (  -0.06,-127.40) (  -0.86,-131.01)  411.35                80
 05/01/2021   05:54:25   (  -0.07,-127.34) (   0.24,-126.01)  152.07                80