Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 4 19.  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)
 04/21/2021   06:03:59   (  -0.08,-127.77) (  -0.04,-127.69)   10.80                80
 04/23/2021   18:02:11   (   0.08,-127.76) (  -0.04,-127.25)   58.06                80
 04/25/2021   06:21:12   (  -0.07,-127.62) (  -1.00,-131.85)  480.91                80
 04/26/2021   05:57:52   (  -0.08,-127.58) (   0.11,-126.85)   83.55                80
 04/27/2021   18:16:43   (   0.07,-127.59) (   0.91,-131.41)  435.46                80
 04/28/2021   17:58:44   (   0.07,-127.55) (  -0.20,-126.42)  129.00                80
 04/30/2021   06:17:44   (  -0.06,-127.40) (  -0.85,-131.01)  410.95                80
 05/01/2021   05:54:25   (  -0.06,-127.35) (   0.26,-126.02)  152.54                80
 05/02/2021   18:13:16   (   0.06,-127.34) (   0.75,-130.58)  368.17                80