Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/27/2020   21:46:00   (   0.16,-128.18) (   0.99,-124.50)  418.95                80
 04/29/2020   10:10:11   (  -0.13,-128.21) (   0.19,-129.69)  169.28                80
 04/30/2020   09:48:35   (  -0.15,-128.22) (  -0.86,-125.12)  353.30                80
 05/01/2020   22:12:52   (   0.12,-128.22) (  -0.38,-130.33)  241.44                80
 05/02/2020   21:51:17   (   0.13,-128.23) (   0.67,-125.76)  281.31                80
 05/04/2020   10:15:27   (  -0.10,-128.26) (   0.51,-130.95)  307.14                80
 05/05/2020   09:53:52   (  -0.12,-128.27) (  -0.55,-126.38)  214.95                80
 05/06/2020   22:18:10   (   0.09,-128.26) (  -0.64,-131.61)  381.10                80
 05/07/2020   21:56:35   (   0.11,-128.27) (   0.41,-127.03)  141.03                80
 05/09/2020   10:20:44   (  -0.08,-128.29) (   0.82,-132.21)  447.94                80
 05/10/2020   09:59:08   (  -0.10,-128.29) (  -0.24,-127.64)   73.49                80