Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 30.  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)    5.83                80
 06/02/2020   22:06:40   (   0.01,-128.06) (  -0.16,-128.73)   76.43                80
 06/03/2020   21:45:04   (   0.02,-128.04) (   0.90,-124.16)  443.02                80
 06/05/2020   10:09:14   (  -0.00,-128.03) (   0.28,-129.34)  149.85                80
 06/06/2020   09:47:37   (  -0.02,-128.00) (  -0.72,-124.76)  368.79                80
 06/07/2020   22:11:56   (  -0.00,-127.93) (  -0.44,-129.99)  233.91                80
 06/08/2020   21:50:20   (   0.01,-127.91) (   0.56,-125.41)  285.05                80
 06/10/2020   10:14:29   (   0.01,-127.89) (   0.62,-130.59)  307.79                80
 06/11/2020   09:52:54   (  -0.00,-127.86) (  -0.44,-126.02)  210.73                80
 06/12/2020   22:17:12   (  -0.02,-127.79) (  -0.77,-131.24)  392.83                80