Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/31/2020   10:03:57   (  -0.01,-128.13) (   0.00,-128.08)    5.90                80
 06/02/2020   22:06:40   (   0.01,-128.06) (  -0.16,-128.73)   76.37                80
 06/03/2020   21:45:04   (   0.02,-128.04) (   0.90,-124.16)  443.09                80
 06/05/2020   10:09:13   (  -0.00,-128.03) (   0.28,-129.34)  149.79                80
 06/06/2020   09:47:37   (  -0.02,-128.00) (  -0.72,-124.76)  368.87                80
 06/07/2020   22:11:56   (  -0.00,-127.93) (  -0.44,-129.99)  233.79                80
 06/08/2020   21:50:20   (   0.01,-127.91) (   0.57,-125.41)  285.19                80
 06/10/2020   10:14:29   (   0.01,-127.89) (   0.61,-130.59)  307.64                80
 06/11/2020   09:52:53   (  -0.00,-127.86) (  -0.39,-126.01)  210.88                80
 06/12/2020   22:14:32   (  -0.02,-127.79) (  -0.76,-131.24)  392.63                80
 06/13/2020   21:58:15   (  -0.01,-127.76) (   0.24,-126.66)  126.22                80