Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/13/2020   09:57:46   (  -0.33,-128.33) (  -0.51,-127.47)   98.03                80
 03/14/2020   22:19:25   (   0.32,-128.34) (  -0.66,-132.70)  497.40                80
 03/15/2020   22:03:10   (   0.32,-128.32) (   0.38,-128.13)   22.68                80
 03/18/2020   10:05:44   (  -0.31,-128.25) (  -0.18,-128.73)   55.62                80
 03/19/2020   09:44:08   (  -0.32,-128.23) (  -1.22,-124.16)  463.84                80
 03/20/2020   22:05:47   (   0.30,-128.23) (   0.06,-129.39)  132.33                80
 03/21/2020   21:49:31   (   0.30,-128.21) (   1.05,-124.81)  387.33                80
 03/23/2020   10:11:01   (  -0.29,-128.16) (   0.15,-130.00)  210.62                80
 03/24/2020   09:49:26   (  -0.30,-128.13) (  -0.89,-125.42)  308.46                80
 03/25/2020   22:13:44   (   0.28,-128.12) (  -0.31,-130.65)  288.62                80
 03/26/2020   21:54:49   (   0.29,-128.10) (   0.73,-126.07)  230.55                80