Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/18/2020   10:04:33   (  -0.04,-127.97) (   0.11,-128.64)   76.27                80
 08/19/2020   09:48:16   (  -0.04,-127.93) (  -0.90,-124.06)  441.85                80
 08/20/2020   22:07:14   (   0.04,-127.84) (  -0.30,-129.27)  163.90                80
 08/21/2020   21:50:57   (   0.04,-127.80) (   0.72,-124.69)  354.19                80
 08/23/2020   10:09:48   (  -0.04,-127.78) (   0.44,-129.88)  240.27                80
 08/24/2020   09:53:31   (  -0.04,-127.74) (  -0.57,-125.30)  277.40                80
 08/25/2020   22:12:28   (   0.05,-127.63) (  -0.63,-130.52)  329.50                80
 08/26/2020   21:56:12   (   0.05,-127.59) (   0.39,-125.94)  187.82                80
 08/28/2020   10:15:02   (  -0.06,-127.56) (   0.77,-131.13)  407.73                80
 08/29/2020   09:58:46   (  -0.06,-127.51) (  -0.25,-126.55)  109.32                80
 08/30/2020   22:17:44   (   0.07,-127.40) (  -0.90,-131.78)  498.45                80
 08/31/2020   22:01:28   (   0.06,-127.35) (   0.12,-127.20)   18.67                80