Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 11 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/07/2020   22:12:50   (   0.10,-127.86) (  -0.30,-129.71)  209.78                80
 11/08/2020   21:51:13   (   0.11,-127.83) (   0.74,-125.13)  308.20                80
 11/10/2020   10:15:21   (  -0.09,-127.76) (   0.46,-130.31)  290.19                80
 11/11/2020   09:53:45   (  -0.11,-127.72) (  -0.57,-125.72)  227.76                80
 11/12/2020   22:18:02   (   0.08,-127.67) (  -0.63,-130.94)  371.80                80
 11/13/2020   21:56:26   (   0.09,-127.63) (   0.41,-126.36)  145.76                80
 11/15/2020   10:20:34   (  -0.06,-127.55) (   0.80,-131.54)  453.74                80
 11/16/2020   09:58:57   (  -0.08,-127.50) (  -0.18,-126.94)   63.53                80
 11/18/2020   22:04:17   (   0.06,-127.40) (   0.03,-127.58)   20.12                80
 11/19/2020   21:42:41   (   0.08,-127.35) (   1.07,-123.00)  496.50                80
 11/21/2020   10:06:49   (  -0.05,-127.26) (   0.16,-128.17)  104.08                80