Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 8 8.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(AQUA) AQUA Lat/Lon    Distance(km)  Time Diff(sec)
 08/10/2021   18:36:52   (  78.86,-125.75) 08/10/2021   18:38:05  (  79.18,-124.30)   46.31                73
 08/10/2021   19:21:11   ( -59.28,  79.56) 08/10/2021   19:21:16  ( -59.28,  79.57)    0.73                 5
 08/10/2021   20:09:12   (  49.88,-107.96) 08/10/2021   20:08:05  (  49.88,-107.97)    0.23                67
 08/13/2021   11:37:48   ( -60.33,-165.24) 08/13/2021   11:38:03  ( -60.33,-165.24)    0.12                15
 08/13/2021   12:26:18   (  52.62,   6.69) 08/13/2021   12:25:20  (  52.61,   6.70)    1.30                58
 08/16/2021   03:54:24   ( -61.32, -50.04) 08/16/2021   03:54:49  ( -61.33, -50.06)    1.07                25
 08/16/2021   04:42:54   (  53.64, 122.11) 08/16/2021   04:42:06  (  53.64, 122.10)    1.05                48
 08/18/2021   20:10:57   ( -62.15,  65.25) 08/18/2021   20:11:32  ( -62.16,  65.22)    2.14                35
 08/18/2021   20:59:53   (  55.96,-123.22) 08/18/2021   20:59:14  (  55.96,-123.21)    0.51                39
 08/21/2021   12:27:49   ( -64.08, 179.53) 08/21/2021   12:28:33  ( -64.07, 179.55)    1.33                44