Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 12 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2019   06:25:13   (  -0.00, -75.19) (  -0.15, -74.40)   89.67                80
 12/22/2019   18:30:37   (  -0.01, -75.20) (   0.01, -75.06)   16.69                80
 12/25/2019   06:33:13   (   0.01, -75.21) (   0.14, -75.68)   53.71                80
 12/26/2019   06:11:37   (   0.01, -75.22) (  -0.88, -71.11)  468.54                80
 12/27/2019   18:35:57   (  -0.01, -75.24) (  -0.28, -76.34)  125.71                80
 12/28/2019   18:14:22   (  -0.00, -75.26) (   0.80, -71.78)  396.99                80
 12/30/2019   06:38:33   (   0.00, -75.27) (   0.37, -76.98)  194.13                80
 12/31/2019   06:16:58   (  -0.00, -75.29) (  -0.65, -72.40)  328.91                80
 01/01/2020   18:41:17   (   0.00, -75.32) (  -0.51, -77.64)  263.96                80