Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/12/2020   10:19:22   (  -0.33,-128.35) (   0.51,-132.05)  421.77                80
 03/13/2020   09:57:46   (  -0.33,-128.33) (  -0.53,-127.47)   98.28                80
 03/14/2020   22:19:26   (   0.32,-128.34) (  -0.64,-132.71)  497.55                80
 03/15/2020   22:03:09   (   0.33,-128.32) (   0.35,-128.12)   22.68                80
 03/18/2020   10:05:44   (  -0.31,-128.26) (  -0.20,-128.74)   55.06                80
 03/19/2020   09:44:08   (  -0.32,-128.24) (  -1.24,-124.16)  464.35                80
 03/20/2020   22:05:47   (   0.30,-128.23) (   0.04,-129.39)  132.21                80
 03/21/2020   21:49:31   (   0.31,-128.21) (   1.08,-124.81)  387.47                80
 03/23/2020   10:11:02   (  -0.29,-128.16) (   0.12,-130.00)  209.92                80
 03/24/2020   09:49:26   (  -0.30,-128.14) (  -0.92,-125.43)  309.18                80