Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 7 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/21/2023   02:49:59   (   0.39, 171.17) (   0.12, 169.95)  138.17                80
 07/22/2023   02:28:59   (   0.37, 170.17) (   1.33, 174.36)  478.88                80
 07/23/2023   14:51:26   (  -0.39, 168.64) (  -0.45, 168.91)   30.59                80
 07/25/2023   03:16:41   (   0.42, 167.09) (  -0.40, 163.42)  418.69                80
 07/26/2023   02:55:41   (   0.40, 166.09) (   0.82, 167.82)  198.09                80
 07/27/2023   15:20:48   (  -0.43, 164.57) (   0.05, 162.37)  250.28                80
 07/28/2023   14:59:47   (  -0.41, 163.58) (  -1.12, 166.79)  365.77                80
 07/30/2023   03:25:02   (   0.44, 162.04) (   0.28, 161.29)   84.66                80
 08/01/2023   15:26:28   (  -0.45, 159.53) (  -0.59, 160.26)   82.63                80
 08/03/2023   03:51:44   (   0.47, 157.99) (  -0.25, 154.76)  367.93                80