Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/26/2019   06:11:37   (   0.01, -75.19) (  -0.90, -71.10)  465.44                80
 12/27/2019   18:35:56   (  -0.02, -75.20) (  -0.27, -76.34)  129.77                80
 12/28/2019   18:14:21   (  -0.01, -75.20) (   0.76, -71.76)  392.15                80
 12/30/2019   06:38:32   (   0.01, -75.21) (   0.41, -76.97)  200.15                80
 12/31/2019   06:16:57   (   0.00, -75.22) (  -0.62, -72.39)  322.22                80
 01/01/2020   18:41:16   (  -0.01, -75.24) (  -0.55, -77.62)  271.56                80
 01/02/2020   18:19:41   (  -0.00, -75.26) (   0.48, -73.05)  251.29                80
 01/04/2020   06:43:52   (   0.01, -75.27) (   0.68, -78.25)  339.50                80
 01/05/2020   06:22:17   (   0.01, -75.29) (  -0.35, -73.68)  183.62                80
 01/06/2020   18:46:36   (  -0.01, -75.32) (  -0.82, -78.91)  409.28                80
 01/07/2020   18:25:00   (  -0.01, -75.34) (   0.21, -74.34)  114.03                80