Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 6 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/02/2020   22:06:40   (   0.01,-128.06) (  -0.16,-128.73)   76.06                80
 06/03/2020   21:45:04   (   0.02,-128.04) (   0.90,-124.15)  443.48                80
 06/05/2020   10:09:13   (  -0.00,-128.03) (   0.27,-129.34)  149.51                80
 06/06/2020   09:47:37   (  -0.02,-128.00) (  -0.73,-124.76)  369.19                80
 06/07/2020   22:11:55   (  -0.00,-127.94) (  -0.49,-129.98)  233.20                80
 06/08/2020   21:53:00   (   0.01,-127.91) (   0.58,-125.41)  285.87                80
 06/10/2020   10:14:29   (   0.01,-127.90) (   0.59,-130.59)  307.00                80
 06/11/2020   09:52:53   (  -0.00,-127.87) (  -0.41,-126.01)  211.57                80
 06/12/2020   22:14:31   (  -0.02,-127.80) (  -0.80,-131.23)  391.70                80
 06/13/2020   21:55:35   (  -0.01,-127.77) (   0.27,-126.66)  127.28                80
 06/15/2020   10:19:44   (   0.03,-127.76) (   0.96,-131.84)  465.37                80