Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 7 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)
 07/02/2022   22:25:00   (   0.17,-128.47) (   0.21,-128.43)    6.37                80
 07/05/2022   10:26:13   (  -0.18,-128.48) (   0.00,-129.35)   99.45                80
 07/06/2022   10:10:28   (  -0.17,-128.47) (  -0.96,-124.88)  408.41                80
 07/07/2022   22:30:15   (   0.20,-128.45) (  -0.21,-130.30)  211.18                80
 07/08/2022   22:14:31   (   0.19,-128.44) (   0.80,-125.85)  296.41                80
 07/10/2022   10:34:09   (  -0.23,-128.44) (   0.41,-131.22)  317.90                80
 07/11/2022   10:18:25   (  -0.22,-128.42) (  -0.61,-126.77)  188.82                80
 07/12/2022   22:38:11   (   0.25,-128.38) (  -0.62,-132.18)  433.14                80
 07/13/2022   22:22:26   (   0.24,-128.36) (   0.40,-127.72)   73.46                80