Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/13/2021   10:31:57   (   0.07,-128.44) (   1.01,-132.53)  466.98                80
 11/14/2021   10:15:38   (   0.08,-128.44) (  -0.02,-127.94)   56.52                80
 11/16/2021   22:15:35   (  -0.07,-128.42) (  -0.11,-128.55)   15.09                80
 11/19/2021   10:18:03   (   0.06,-128.41) (   0.22,-129.13)   82.21                80
 11/20/2021   10:01:45   (   0.08,-128.40) (  -0.81,-124.54)  440.61                80
 11/21/2021   22:20:40   (  -0.05,-128.37) (  -0.34,-129.74)  155.74                80
 11/22/2021   22:04:20   (  -0.06,-128.36) (   0.64,-125.14)  366.78                80
 11/24/2021   10:23:08   (   0.03,-128.34) (   0.45,-130.32)  224.91                80
 11/25/2021   10:06:48   (   0.05,-128.32) (  -0.53,-125.71)  297.18                80
 11/26/2021   22:25:44   (  -0.02,-128.29) (  -0.61,-130.92)  300.17                80