Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 1 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/25/2020   10:06:40   (  -0.04,-128.37) (   0.27,-129.65)  147.12                80
 01/26/2020   09:50:25   (  -0.04,-128.35) (  -0.76,-125.08)  372.69                80
 01/27/2020   22:12:05   (   0.04,-128.33) (  -0.39,-130.32)  226.45                80
 01/28/2020   21:50:29   (   0.04,-128.31) (   0.59,-125.73)  293.06                80
 01/30/2020   10:11:59   (  -0.04,-128.27) (   0.58,-130.93)  303.34                80
 01/31/2020   09:55:43   (  -0.04,-128.25) (  -0.45,-126.35)  216.14                80
 02/01/2020   22:17:24   (   0.04,-128.23) (  -0.70,-131.59)  383.28                80
 02/02/2020   21:55:47   (   0.03,-128.20) (   0.28,-127.01)  135.67                80
 02/04/2020   10:17:18   (  -0.03,-128.15) (   0.89,-132.20)  462.11                80
 02/05/2020   10:01:02   (  -0.03,-128.12) (  -0.14,-127.63)   56.51                80