Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/20/2022   22:20:57   (   0.04,-128.36) (  -0.19,-129.42)  120.77                80
 01/21/2022   22:05:15   (   0.04,-128.36) (   0.82,-124.98)  386.31                80
 01/23/2022   10:27:36   (  -0.05,-128.36) (   0.41,-130.36)  229.25                80
 01/24/2022   10:06:33   (  -0.05,-128.35) (  -0.60,-125.92)  277.41                80
 01/25/2022   22:29:03   (   0.05,-128.35) (  -0.62,-131.34)  341.49                80
 01/26/2022   22:13:19   (   0.04,-128.34) (   0.34,-126.89)  164.91                80
 01/28/2022   10:35:41   (  -0.04,-128.32) (   0.84,-132.29)  451.73                80
 01/29/2022   10:14:38   (  -0.03,-128.31) (  -0.11,-127.83)   54.05                80
 01/31/2022   22:18:44   (   0.02,-128.27) (  -0.13,-128.80)   60.85                80
 02/01/2022   22:03:01   (   0.02,-128.26) (   0.89,-124.35)  444.77                80