Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 16.  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) (  -0.09,-128.55)   15.07                80
 11/19/2021   10:18:03   (   0.06,-128.40) (   0.20,-129.13)   82.93                80
 11/20/2021   10:01:44   (   0.08,-128.39) (  -0.78,-124.53)  439.81                80
 11/21/2021   22:20:39   (  -0.05,-128.36) (  -0.37,-129.73)  156.43                80
 11/22/2021   22:04:21   (  -0.06,-128.35) (   0.67,-125.14)  365.96                80
 11/24/2021   10:23:07   (   0.03,-128.32) (   0.47,-130.31)  226.14                80
 11/25/2021   10:06:48   (   0.05,-128.31) (  -0.57,-125.72)  295.81                80
 11/26/2021   22:25:43   (  -0.02,-128.27) (  -0.62,-130.91)  301.50                80
 11/27/2021   22:09:24   (  -0.03,-128.25) (   0.42,-126.32)  220.38                80
 11/29/2021   10:28:11   (   0.00,-128.23) (   0.73,-131.49)  372.22                80