Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/25/2020   22:13:44   (   0.28,-128.08) (  -0.30,-130.65)  292.01                80
 03/26/2020   21:52:08   (   0.29,-128.06) (   0.75,-126.07)  226.66                80
 03/28/2020   10:16:19   (  -0.27,-127.98) (   0.44,-131.26)  373.26                80
 03/29/2020   09:54:42   (  -0.28,-127.95) (  -0.54,-126.68)  144.58                80
 03/30/2020   22:19:00   (   0.26,-127.92) (  -0.65,-131.90)  454.00                80
 03/31/2020   21:57:25   (   0.27,-127.89) (   0.40,-127.33)   63.76                80
 04/03/2020   10:02:39   (  -0.25,-127.76) (  -0.19,-127.93)   20.14                80
 04/04/2020   09:41:03   (  -0.26,-127.72) (  -1.23,-123.36)  496.91                80
 04/05/2020   22:05:22   (   0.24,-127.68) (   0.06,-128.59)  102.99                80
 04/06/2020   21:43:45   (   0.25,-127.64) (   1.05,-124.00)  414.10                80