Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/18/2022   10:16:50   (  -0.04,-128.36) (  -0.02,-128.44)    9.93                80
 01/19/2022   10:01:08   (  -0.04,-128.36) (  -1.03,-124.00)  497.16                80
 01/20/2022   22:20:57   (   0.04,-128.36) (  -0.20,-129.42)  121.13                80
 01/21/2022   22:05:15   (   0.04,-128.36) (   0.82,-124.98)  385.90                80
 01/23/2022   10:27:36   (  -0.05,-128.35) (   0.42,-130.36)  229.43                80
 01/24/2022   10:06:33   (  -0.04,-128.35) (  -0.59,-125.92)  277.18                80
 01/25/2022   22:29:03   (   0.05,-128.34) (  -0.62,-131.34)  342.14                80
 01/26/2022   22:13:20   (   0.04,-128.33) (   0.39,-126.90)  164.20                80
 01/28/2022   10:35:41   (  -0.04,-128.32) (   0.85,-132.28)  452.21                80
 01/29/2022   10:17:19   (  -0.03,-128.30) (  -0.16,-127.84)   53.57                80
 01/31/2022   22:18:45   (   0.02,-128.26) (  -0.08,-128.81)   61.83                80