Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/26/2020   21:56:13   (   0.05,-127.60) (   0.44,-125.94)  189.22                80
 08/28/2020   10:15:03   (  -0.06,-127.58) (   0.72,-131.14)  405.41                80
 08/29/2020   09:58:46   (  -0.06,-127.53) (  -0.30,-126.56)  111.73                80
 08/30/2020   22:17:44   (   0.07,-127.42) (  -0.90,-131.77)  496.44                80
 08/31/2020   22:01:27   (   0.07,-127.37) (   0.12,-127.19)   20.72                80
 09/03/2020   10:01:21   (  -0.08,-127.30) (   0.01,-127.80)   56.86                80
 09/04/2020   09:45:05   (  -0.07,-127.25) (  -1.01,-123.22)  460.26                80
 09/05/2020   22:04:02   (   0.08,-127.13) (  -0.20,-128.44)  148.25                80
 09/06/2020   21:47:45   (   0.08,-127.09) (   0.83,-123.86)  368.60                80
 09/08/2020   10:06:35   (  -0.08,-127.05) (   0.38,-129.04)  226.85                80