Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/01/2020   22:17:23   (   0.04,-128.21) (  -0.74,-131.58)  384.88                80
 02/02/2020   21:55:48   (   0.03,-128.18) (   0.29,-127.01)  133.89                80
 02/04/2020   10:17:18   (  -0.03,-128.13) (   0.88,-132.20)  463.90                80
 02/05/2020   10:01:03   (  -0.03,-128.10) (  -0.15,-127.63)   54.55                80
 02/07/2020   22:03:45   (  -0.01,-128.03) (  -0.09,-128.27)   27.98                80
 02/08/2020   21:42:10   (  -0.01,-127.99) (   0.95,-123.69)  489.63                80
 02/10/2020   10:03:40   (   0.01,-127.93) (   0.22,-128.89)  109.81                80
 02/11/2020   09:47:25   (   0.01,-127.89) (  -0.81,-124.31)  407.70                80
 02/12/2020   22:09:04   (  -0.00,-127.84) (  -0.40,-129.54)  194.26                80
 02/13/2020   21:47:29   (  -0.00,-127.80) (   0.63,-124.97)  322.97                80
 02/15/2020   10:08:59   (   0.00,-127.73) (   0.54,-130.16)  277.29                80