Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/07/2020   10:14:04   (  -0.34,-128.40) (   0.20,-130.78)  271.08                80
 03/08/2020   09:52:28   (  -0.34,-128.39) (  -0.84,-126.21)  249.40                80
 03/09/2020   22:14:08   (   0.33,-128.39) (  -0.33,-131.44)  346.49                80
 03/10/2020   21:57:51   (   0.34,-128.38) (   0.65,-126.85)  174.10                80
 03/12/2020   10:19:22   (  -0.33,-128.35) (   0.53,-132.04)  421.90                80
 03/13/2020   09:57:46   (  -0.33,-128.33) (  -0.51,-127.47)   98.06                80
 03/14/2020   22:19:25   (   0.32,-128.33) (  -0.65,-132.70)  498.92                80
 03/15/2020   22:00:30   (   0.33,-128.31) (   0.39,-128.13)   21.19                80
 03/18/2020   10:05:44   (  -0.31,-128.25) (  -0.18,-128.74)   56.03                80
 03/19/2020   09:44:08   (  -0.32,-128.23) (  -1.22,-124.16)  463.31                80
 03/20/2020   22:08:27   (   0.30,-128.21) (   0.02,-129.39)  134.38                80