Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 8 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/18/2020   10:04:33   (  -0.04,-127.97) (   0.10,-128.64)   76.46                80
 08/19/2020   09:48:17   (  -0.04,-127.93) (  -0.92,-124.06)  441.62                80
 08/20/2020   22:07:14   (   0.04,-127.84) (  -0.28,-129.28)  164.20                80
 08/21/2020   21:50:57   (   0.04,-127.80) (   0.73,-124.69)  353.80                80
 08/23/2020   10:09:48   (  -0.04,-127.78) (   0.43,-129.89)  240.75                80
 08/24/2020   09:53:31   (  -0.04,-127.73) (  -0.59,-125.31)  276.86                80
 08/25/2020   22:12:29   (   0.05,-127.63) (  -0.61,-130.52)  330.11                80
 08/26/2020   21:56:12   (   0.05,-127.58) (   0.41,-125.94)  187.12                80
 08/28/2020   10:15:02   (  -0.06,-127.55) (   0.75,-131.14)  408.49                80
 08/29/2020   09:58:46   (  -0.06,-127.51) (  -0.27,-126.55)  108.44                80
 08/30/2020   22:17:43   (   0.06,-127.39) (  -0.93,-131.77)  499.36                80