Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2019   06:33:13   (   0.02, -75.19) (   0.14, -75.68)   55.84                80
 12/26/2019   06:11:37   (   0.01, -75.19) (  -0.89, -71.10)  465.89                80
 12/27/2019   18:35:56   (  -0.01, -75.21) (  -0.27, -76.34)  129.02                80
 12/28/2019   18:14:21   (  -0.01, -75.22) (   0.75, -71.76)  393.13                80
 12/30/2019   06:38:32   (   0.00, -75.22) (   0.42, -76.96)  198.86                80
 12/31/2019   06:16:57   (  -0.00, -75.24) (  -0.61, -72.39)  323.75                80
 01/01/2020   18:41:16   (  -0.00, -75.26) (  -0.56, -77.62)  269.77                80
 01/02/2020   18:19:42   (   0.01, -75.28) (   0.53, -73.06)  253.35                80
 01/04/2020   06:43:52   (   0.00, -75.30) (   0.69, -78.25)  337.12                80
 01/05/2020   06:22:17   (  -0.00, -75.32) (  -0.40, -73.69)  186.27                80
 01/06/2020   18:46:36   (  -0.01, -75.35) (  -0.83, -78.91)  406.38                80