Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 6 19.  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)
 06/20/2021   19:37:03   (  51.94,-101.11) 06/20/2021   19:37:39  (  51.94,-101.12)    0.23                36
 06/20/2021   20:26:40   ( -48.24,  67.89) 06/20/2021   20:26:01  ( -48.27,  68.09)   15.34                39
 06/23/2021   11:53:49   (  53.49,  14.05) 06/23/2021   11:54:34  (  53.50,  14.03)    1.10                45
 06/23/2021   12:42:49   ( -47.68,-175.93) 06/23/2021   12:42:20  ( -47.70,-175.80)   10.10                29
 06/26/2021   04:10:31   (  54.88, 129.25) 06/26/2021   04:11:25  (  54.88, 129.23)    2.02                54
 06/26/2021   04:58:57   ( -47.11, -59.75) 06/26/2021   04:58:38  ( -47.14, -59.70)    5.53                19
 06/28/2021   20:27:36   (  57.51,-116.34) 06/28/2021   20:28:38  (  57.50,-116.32)    1.19                62
 06/28/2021   21:15:12   ( -46.88,  56.28) 06/28/2021   21:15:02  ( -46.88,  56.28)    0.19                10
 07/01/2021   12:44:13   (  58.54,  -1.06) 07/01/2021   12:45:24  (  58.54,  -1.06)    0.16                71