Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 1 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/31/2020   09:55:43   (  -0.04,-128.24) (  -0.44,-126.35)  215.06                80
 02/01/2020   22:17:24   (   0.04,-128.21) (  -0.71,-131.59)  384.90                80
 02/02/2020   21:55:48   (   0.03,-128.18) (   0.32,-127.01)  133.84                80
 02/04/2020   10:17:17   (  -0.03,-128.13) (   0.91,-132.20)  464.01                80
 02/05/2020   10:01:02   (  -0.03,-128.10) (  -0.12,-127.62)   54.39                80
 02/07/2020   22:03:46   (  -0.01,-128.03) (  -0.06,-128.27)   28.13                80
 02/08/2020   21:42:10   (  -0.01,-127.99) (   0.97,-123.70)  489.42                80
 02/10/2020   10:03:40   (   0.01,-127.92) (   0.25,-128.88)  110.12                80
 02/11/2020   09:47:24   (   0.01,-127.89) (  -0.78,-124.31)  407.41                80
 02/12/2020   22:09:04   (  -0.00,-127.84) (  -0.37,-129.55)  194.56                80
 02/13/2020   21:47:29   (  -0.00,-127.80) (   0.66,-124.97)  322.65                80