Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 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)
 12/24/2020   06:15:31   (   0.01, -75.20) (  -0.90, -71.01)  476.81                80
 12/25/2020   18:37:09   (  -0.01, -75.21) (  -0.24, -76.23)  116.10                80
 12/26/2020   18:20:52   (  -0.01, -75.22) (   0.81, -71.65)  407.48                80
 12/28/2020   06:42:21   (   0.00, -75.23) (   0.35, -76.84)  182.31                80
 12/29/2020   06:20:44   (   0.00, -75.24) (  -0.65, -72.25)  341.18                80
 12/30/2020   18:42:21   (  -0.00, -75.26) (  -0.49, -77.47)  251.62                80
 12/31/2020   18:26:04   (  -0.01, -75.27) (   0.51, -72.88)  272.35                80
 01/02/2021   06:47:33   (   0.01, -75.29) (   0.65, -78.06)  316.30                80
 01/03/2021   06:25:57   (   0.01, -75.31) (  -0.41, -73.49)  207.77                80
 01/04/2021   18:47:33   (  -0.01, -75.33) (  -0.79, -78.70)  384.41                80
 01/05/2021   18:31:16   (  -0.01, -75.35) (   0.27, -74.12)  140.22                80