Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/04/2020   10:17:18   (  -0.03,-128.13) (   0.88,-132.20)  463.48                80
 02/05/2020   10:01:02   (  -0.03,-128.11) (  -0.15,-127.63)   55.02                80
 02/07/2020   22:03:46   (  -0.00,-128.03) (  -0.04,-128.28)   27.52                80
 02/08/2020   21:42:10   (  -0.01,-128.00) (   0.93,-123.69)  490.41                80
 02/10/2020   10:03:40   (   0.01,-127.93) (   0.24,-128.88)  108.91                80
 02/11/2020   09:47:24   (   0.00,-127.90) (  -0.79,-124.31)  408.64                80
 02/12/2020   22:09:05   (   0.00,-127.85) (  -0.37,-129.55)  193.29                80
 02/13/2020   21:47:29   (   0.00,-127.81) (   0.65,-124.97)  323.97                80
 02/15/2020   10:08:59   (  -0.00,-127.74) (   0.52,-130.17)  276.15                80
 02/16/2020   09:52:43   (   0.00,-127.70) (  -0.44,-125.58)  241.03                80
 02/17/2020   22:14:23   (  -0.01,-127.64) (  -0.72,-130.81)  361.50                80