Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 4 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/25/2020   09:43:18   (  -0.18,-128.14) (  -1.13,-123.85)  488.57                80
 04/26/2020   22:07:36   (   0.15,-128.16) (  -0.06,-129.08)  104.53                80
 04/27/2020   21:46:00   (   0.16,-128.18) (   1.00,-124.50)  418.69                80
 04/29/2020   10:10:11   (  -0.13,-128.20) (   0.19,-129.70)  169.76                80
 04/30/2020   09:48:35   (  -0.15,-128.21) (  -0.86,-125.12)  352.73                80
 05/01/2020   22:12:53   (   0.12,-128.22) (  -0.38,-130.34)  242.10                80
 05/02/2020   21:51:17   (   0.13,-128.23) (   0.67,-125.76)  280.53                80
 05/04/2020   10:15:27   (  -0.10,-128.25) (   0.51,-130.95)  308.14                80
 05/05/2020   09:53:52   (  -0.12,-128.26) (  -0.55,-126.38)  213.86                80
 05/06/2020   22:18:10   (   0.09,-128.25) (  -0.64,-131.61)  382.29                80
 05/07/2020   21:56:35   (   0.11,-128.25) (   0.41,-127.04)  139.75                80