Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/21/2020   21:49:31   (   0.30,-128.19) (   1.06,-124.81)  385.91                80
 03/23/2020   10:11:01   (  -0.29,-128.12) (   0.13,-130.00)  213.65                80
 03/24/2020   09:49:26   (  -0.30,-128.10) (  -0.92,-125.43)  305.04                80
 03/25/2020   22:13:44   (   0.28,-128.09) (  -0.28,-130.65)  291.48                80
 03/26/2020   21:52:08   (   0.29,-128.06) (   0.77,-126.08)  227.33                80
 03/28/2020   10:16:19   (  -0.27,-127.99) (   0.43,-131.27)  372.61                80
 03/29/2020   09:54:42   (  -0.28,-127.96) (  -0.56,-126.68)  145.33                80
 03/30/2020   22:19:01   (   0.26,-127.93) (  -0.63,-131.91)  452.87                80
 03/31/2020   21:57:25   (   0.27,-127.90) (   0.42,-127.33)   65.07                80
 04/03/2020   10:02:39   (  -0.25,-127.78) (  -0.21,-127.94)   18.56                80