Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 6 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/28/2019   10:00:42   (  -0.09,-127.96) (  -0.06,-128.18)   24.74                80
 06/29/2019   09:44:27   (  -0.08,-127.93) (  -1.04,-123.60)  492.87                80
 06/30/2019   22:03:28   (   0.11,-127.88) (  -0.10,-128.85)  110.92                80
 07/01/2019   21:47:13   (   0.10,-127.84) (   0.89,-124.27)  406.46                80
 07/03/2019   10:06:05   (  -0.12,-127.78) (   0.26,-129.48)  194.07                80
 07/04/2019   09:49:50   (  -0.11,-127.74) (  -0.73,-124.91)  322.58                80
 07/05/2019   22:08:51   (   0.14,-127.67) (  -0.41,-130.16)  282.99                80
 07/06/2019   21:52:35   (   0.13,-127.63) (   0.58,-125.58)  233.87                80
 07/08/2019   10:11:28   (  -0.15,-127.57) (   0.57,-130.79)  366.64                80
 07/09/2019   09:55:12   (  -0.14,-127.53) (  -0.41,-126.21)  149.74                80
 07/10/2019   22:14:14   (   0.16,-127.45) (  -0.71,-131.46)  456.93                80