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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/16/2021   22:15:35   (  -0.07,-128.42) (  -0.12,-128.55)   15.20                80
 11/19/2021   10:18:03   (   0.06,-128.40) (   0.22,-129.13)   82.68                80
 11/20/2021   10:01:44   (   0.08,-128.39) (  -0.81,-124.53)  440.04                80
 11/21/2021   22:20:40   (  -0.05,-128.37) (  -0.34,-129.74)  156.26                80
 11/22/2021   22:04:20   (  -0.06,-128.35) (   0.64,-125.14)  366.19                80
 11/24/2021   10:23:06   (   0.03,-128.33) (   0.50,-130.30)  225.78                80
 11/25/2021   10:06:48   (   0.05,-128.31) (  -0.54,-125.71)  296.20                80
 11/26/2021   22:25:43   (  -0.02,-128.28) (  -0.60,-130.92)  301.12                80
 11/27/2021   22:09:24   (  -0.03,-128.26) (   0.39,-126.32)  220.79                80