Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/20/2020   10:14:24   (  -0.36,-128.41) (   0.36,-131.53)  356.93                80
 02/21/2020   09:58:09   (  -0.36,-128.41) (  -0.68,-126.96)  165.60                80
 02/22/2020   22:17:09   (   0.36,-128.45) (  -0.46,-132.20)  427.35                80
 02/23/2020   22:00:53   (   0.36,-128.46) (   0.52,-127.62)   95.23                80
 02/25/2020   10:22:23   (  -0.36,-128.44) (   0.65,-132.81)  498.66                80
 02/26/2020   10:00:47   (  -0.36,-128.45) (  -0.39,-128.24)   23.57                80
 02/28/2020   22:03:31   (   0.36,-128.48) (   0.24,-128.89)   48.09                80
 02/29/2020   21:47:16   (   0.36,-128.48) (   1.28,-124.32)  473.82                80
 03/02/2020   10:08:46   (  -0.35,-128.45) (  -0.10,-129.51)  121.11                80
 03/03/2020   09:47:11   (  -0.35,-128.45) (  -1.14,-124.94)  400.08                80
 03/04/2020   22:08:50   (   0.35,-128.46) (  -0.03,-130.17)  194.99                80