Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/20/2020   22:05:47   (   0.30,-128.21) (   0.06,-129.39)  133.37                80
 03/21/2020   21:49:31   (   0.30,-128.19) (   1.04,-124.80)  385.92                80
 03/23/2020   10:11:01   (  -0.29,-128.12) (   0.15,-129.99)  213.66                80
 03/24/2020   09:49:25   (  -0.30,-128.10) (  -0.90,-125.42)  305.03                80
 03/25/2020   22:13:44   (   0.28,-128.09) (  -0.30,-130.65)  291.48                80
 03/26/2020   21:52:28   (   0.29,-128.06) (   0.75,-126.07)  227.32                60
 03/28/2020   10:16:18   (  -0.27,-127.99) (   0.45,-131.26)  372.59                80
 03/29/2020   09:54:42   (  -0.28,-127.96) (  -0.54,-126.68)  145.37                80
 03/30/2020   22:19:00   (   0.26,-127.93) (  -0.64,-131.90)  452.85                80
 03/31/2020   21:57:25   (   0.27,-127.90) (   0.41,-127.33)   65.06                80