Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2020   18:34:37   (   0.00, -75.17) (   0.05, -75.00)   19.88                80
 12/23/2020   06:37:09   (  -0.01, -75.19) (   0.06, -75.61)   46.58                80
 12/24/2020   06:15:32   (  -0.00, -75.21) (  -0.93, -71.02)  477.36                80
 12/25/2020   18:37:09   (  -0.00, -75.23) (  -0.21, -76.24)  114.67                80
 12/26/2020   18:20:52   (  -0.01, -75.24) (   0.79, -71.65)  409.57                80
 12/28/2020   06:42:21   (   0.01, -75.26) (   0.38, -76.83)  179.25                80
 12/29/2020   06:20:45   (   0.01, -75.28) (  -0.68, -72.25)  344.81                80
 12/30/2020   18:42:22   (  -0.01, -75.30) (  -0.47, -77.48)  247.24                80
 12/31/2020   18:26:04   (  -0.01, -75.32) (   0.53, -72.89)  277.24                80
 01/02/2021   06:47:34   (   0.01, -75.35) (   0.63, -78.07)  310.61                80