Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 9 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/03/2020   10:04:03   (  -0.08,-127.88) (  -0.10,-127.83)    6.99                80
 09/05/2020   22:06:45   (   0.08,-127.91) (  -0.03,-128.47)   63.72                80
 09/06/2020   21:45:08   (   0.08,-127.94) (   0.99,-123.89)  461.89                80
 09/08/2020   10:06:39   (  -0.08,-128.05) (   0.15,-129.09)  118.47                80
 09/09/2020   09:50:22   (  -0.08,-128.08) (  -0.87,-124.51)  406.77                80
 09/10/2020   22:12:00   (   0.09,-128.06) (  -0.29,-129.73)  190.94                80
 09/11/2020   21:50:24   (   0.09,-128.08) (   0.73,-125.15)  333.65                80
 09/13/2020   10:11:54   (  -0.10,-128.17) (   0.40,-130.35)  248.33                80
 09/14/2020   09:55:38   (  -0.10,-128.20) (  -0.62,-125.77)  276.09                80
 09/15/2020   22:17:16   (   0.11,-128.17) (  -0.54,-131.00)  322.45                80