Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 8 15.  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)
 08/16/2021   03:54:21   ( -61.16, -49.91) 08/16/2021   03:54:46  ( -61.17, -49.94)    1.70                25
 08/16/2021   04:42:51   (  53.46, 122.20) 08/16/2021   04:42:03  (  53.47, 122.18)    1.52                48
 08/18/2021   20:11:14   ( -63.09,  64.46) 08/18/2021   20:11:48  ( -63.09,  64.49)    1.51                34
 08/18/2021   20:59:49   (  55.73,-123.08) 08/18/2021   20:59:10  (  55.73,-123.09)    0.26                39
 08/21/2021   12:27:43   ( -63.74, 179.84) 08/21/2021   12:28:27  ( -63.74, 179.84)    0.10                44
 08/21/2021   13:16:41   (  57.70,  -8.32) 08/21/2021   13:16:11  (  57.70,  -8.30)    0.96                30
 08/24/2021   04:44:10   ( -64.22, -64.66) 08/24/2021   04:45:04  ( -64.23, -64.70)    1.94                54
 08/24/2021   05:33:31   (  59.49, 106.44) 08/24/2021   05:33:10  (  59.49, 106.48)    2.09                21
 08/26/2021   21:00:55   ( -65.69,  49.83) 08/26/2021   21:01:58  ( -65.69,  49.85)    0.78                63