Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 4 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/01/2022   22:18:09   (  -0.11,-128.39) (   0.07,-127.53)   97.81                80
 04/04/2022   10:22:05   (   0.11,-128.40) (   0.15,-128.46)    8.16                80
 04/06/2022   22:23:30   (  -0.11,-128.42) (  -0.37,-129.43)  116.06                80
 04/07/2022   22:07:47   (  -0.12,-128.42) (   0.63,-124.98)  391.79                80
 04/09/2022   10:30:06   (   0.12,-128.41) (   0.58,-130.36)  222.98                80
 04/10/2022   10:09:03   (   0.12,-128.41) (  -0.42,-125.91)  284.40                80
 04/11/2022   22:31:32   (  -0.12,-128.41) (  -0.79,-131.33)  333.01                80
 04/12/2022   22:15:49   (  -0.13,-128.41) (   0.21,-126.88)  174.36                80
 04/14/2022   10:38:08   (   0.12,-128.40) (   1.00,-132.26)  440.68                80