Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 1 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/26/2020   09:50:25   (  -0.04,-128.35) (  -0.76,-125.08)  372.44                80
 01/27/2020   22:12:05   (   0.04,-128.32) (  -0.39,-130.32)  226.88                80
 01/28/2020   21:50:30   (   0.04,-128.30) (   0.64,-125.74)  292.50                80
 01/30/2020   10:12:00   (  -0.04,-128.26) (   0.53,-130.94)  304.10                80
 01/31/2020   09:55:43   (  -0.04,-128.24) (  -0.44,-126.35)  215.26                80
 02/01/2020   22:17:24   (   0.04,-128.22) (  -0.71,-131.59)  384.35                80
 02/02/2020   21:55:48   (   0.03,-128.19) (   0.32,-127.02)  134.47                80
 02/04/2020   10:17:18   (  -0.03,-128.14) (   0.90,-132.20)  463.53                80
 02/05/2020   10:01:02   (  -0.03,-128.11) (  -0.13,-127.63)   54.96                80
 02/07/2020   22:03:46   (  -0.01,-128.04) (  -0.04,-128.28)   27.16                80
 02/08/2020   21:42:09   (  -0.01,-128.00) (   0.93,-123.69)  490.56                80