Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 3 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/18/2020   10:05:44   (  -0.31,-128.24) (  -0.21,-128.74)   56.78                80
 03/19/2020   09:44:08   (  -0.31,-128.21) (  -1.25,-124.16)  462.34                80
 03/20/2020   22:05:47   (   0.30,-128.22) (   0.04,-129.39)  133.24                80
 03/21/2020   21:49:31   (   0.30,-128.20) (   1.08,-124.81)  386.13                80
 03/23/2020   10:11:02   (  -0.29,-128.13) (   0.11,-130.00)  213.18                80
 03/24/2020   09:49:25   (  -0.30,-128.10) (  -0.87,-125.42)  305.63                80
 03/25/2020   22:13:44   (   0.28,-128.10) (  -0.27,-130.65)  290.88                80
 03/26/2020   21:54:48   (   0.29,-128.07) (   0.71,-126.07)  228.03                80
 03/28/2020   10:16:19   (  -0.27,-128.00) (   0.43,-131.27)  371.64                80
 03/29/2020   09:54:43   (  -0.28,-127.97) (  -0.55,-126.68)  146.40                80
 03/30/2020   22:19:01   (   0.26,-127.95) (  -0.64,-131.91)  451.79                80
 03/31/2020   21:57:26   (   0.27,-127.91) (   0.41,-127.33)   66.20                80