Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 7 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/24/2019   10:08:44   (  -0.22,-128.09) (   0.25,-130.17)  237.66                80
 07/25/2019   09:52:29   (  -0.21,-128.11) (  -0.80,-125.60)  286.41                80
 07/26/2019   22:11:30   (   0.24,-128.12) (  -0.36,-130.85)  310.13                80
 07/27/2019   21:55:14   (   0.23,-128.15) (   0.63,-126.27)  213.62                80
 07/29/2019   10:14:07   (  -0.26,-128.20) (   0.49,-131.49)  374.52                80
 07/30/2019   09:57:53   (  -0.25,-128.22) (  -0.56,-126.92)  148.51                80
 07/31/2019   22:16:53   (   0.27,-128.22) (  -0.59,-132.17)  449.80                80
 08/01/2019   22:00:38   (   0.26,-128.23) (   0.40,-127.59)   73.14                80
 08/04/2019   10:00:36   (  -0.27,-128.30) (  -0.27,-128.23)    7.47                80
 08/06/2019   22:03:21   (   0.28,-128.30) (   0.17,-128.91)   69.23                80