Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/14/2020   22:19:25   (   0.32,-128.34) (  -0.65,-132.70)  497.33                80
 03/15/2020   22:03:09   (   0.32,-128.32) (   0.34,-128.12)   22.90                80
 03/18/2020   10:05:44   (  -0.31,-128.25) (  -0.20,-128.74)   55.92                80
 03/19/2020   09:44:08   (  -0.32,-128.23) (  -1.24,-124.16)  463.41                80
 03/20/2020   22:05:47   (   0.30,-128.22) (   0.03,-129.38)  132.50                80
 03/21/2020   21:49:31   (   0.30,-128.21) (   1.07,-124.81)  387.10                80
 03/23/2020   10:11:01   (  -0.29,-128.15) (   0.12,-130.00)  211.16                80
 03/24/2020   09:49:26   (  -0.30,-128.13) (  -0.92,-125.43)  307.85                80
 03/25/2020   22:13:44   (   0.28,-128.11) (  -0.28,-130.65)  288.98                80
 03/26/2020   21:52:09   (   0.29,-128.09) (   0.77,-126.08)  230.17                80