Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 1 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/22/2020   22:06:46   (   0.04,-128.41) (  -0.12,-129.03)   71.16                80
 01/23/2020   21:45:10   (   0.03,-128.41) (   0.91,-124.46)  449.78                80
 01/25/2020   10:06:40   (  -0.04,-128.39) (   0.26,-129.65)  144.07                80
 01/26/2020   09:50:25   (  -0.03,-128.39) (  -0.77,-125.08)  376.80                80
 01/27/2020   22:12:05   (   0.04,-128.38) (  -0.37,-130.32)  220.93                80
 01/28/2020   21:50:29   (   0.04,-128.37) (   0.60,-125.73)  299.67                80
 01/30/2020   10:11:59   (  -0.04,-128.35) (   0.56,-130.93)  294.78                80
 01/31/2020   09:55:44   (  -0.04,-128.34) (  -0.47,-126.36)  225.77                80
 02/01/2020   22:17:24   (   0.04,-128.33) (  -0.67,-131.60)  372.27                80
 02/02/2020   21:55:47   (   0.03,-128.31) (   0.31,-127.01)  147.78                80
 02/04/2020   10:17:18   (  -0.03,-128.28) (   0.85,-132.21)  447.99                80