Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 4 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)
 04/14/2022   10:38:07   (   0.12,-128.38) (   1.01,-132.25)  441.36                80
 04/15/2022   10:17:04   (   0.12,-128.38) (   0.00,-127.80)   65.52                80
 04/17/2022   22:21:09   (  -0.12,-128.37) (  -0.21,-128.77)   46.09                80
 04/18/2022   22:05:26   (  -0.12,-128.36) (   0.80,-124.32)  460.32                80
 04/20/2022   10:27:45   (   0.11,-128.32) (   0.40,-129.70)  156.89                80
 04/21/2022   10:06:41   (   0.12,-128.30) (  -0.55,-125.24)  348.83                80
 04/22/2022   22:29:10   (  -0.11,-128.28) (  -0.66,-130.66)  271.49                80
 04/23/2022   22:13:27   (  -0.12,-128.27) (   0.35,-126.21)  234.27                80
 04/25/2022   10:33:06   (   0.12,-128.23) (   0.86,-131.59)  383.15                80
 04/26/2022   10:17:22   (   0.12,-128.21) (  -0.15,-127.14)  122.43                80