Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/31/2022   22:18:45   (   0.02,-128.30) (  -0.08,-128.80)   57.33                80
 02/01/2022   22:03:02   (   0.03,-128.29) (   0.94,-124.36)  448.40                80
 02/03/2022   10:25:23   (  -0.02,-128.25) (   0.30,-129.75)  169.86                80
 02/04/2022   10:04:20   (  -0.02,-128.24) (  -0.66,-125.29)  335.90                80
 02/05/2022   22:26:49   (   0.02,-128.24) (  -0.54,-130.72)  282.49                80
 02/06/2022   22:11:07   (   0.02,-128.23) (   0.49,-126.27)  223.28                80
 02/08/2022   10:33:28   (  -0.01,-128.19) (   0.75,-131.66)  395.27                80
 02/09/2022   10:12:25   (  -0.00,-128.17) (  -0.21,-127.20)  110.22                80
 02/11/2022   22:16:30   (  -0.01,-128.14) (  -0.01,-128.18)    4.20                80