Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/21/2022   22:05:15   (   0.04,-128.36) (   0.84,-124.98)  386.51                80
 01/23/2022   10:27:36   (  -0.05,-128.36) (   0.40,-130.37)  229.19                80
 01/24/2022   10:06:34   (  -0.05,-128.35) (  -0.61,-125.92)  277.52                80
 01/25/2022   22:29:03   (   0.05,-128.35) (  -0.60,-131.35)  341.17                80
 01/26/2022   22:13:19   (   0.04,-128.34) (   0.36,-126.89)  165.25                80
 01/28/2022   10:35:41   (  -0.04,-128.32) (   0.88,-132.28)  451.50                80
 01/29/2022   10:14:38   (  -0.03,-128.31) (  -0.13,-127.83)   54.28                80
 01/31/2022   22:18:44   (   0.02,-128.27) (  -0.11,-128.80)   60.24                80
 02/01/2022   22:03:02   (   0.02,-128.26) (   0.91,-124.36)  445.34                80
 02/03/2022   10:25:23   (  -0.03,-128.24) (   0.34,-129.74)  172.15                80