Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 6 18.  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   (  51.92,-101.10) 06/20/2021   19:37:39  (  51.92,-101.11)    0.26                36
 06/20/2021   20:26:41   ( -48.29,  67.87) 06/20/2021   20:26:02  ( -48.31,  68.08)   15.39                39
 06/23/2021   11:53:48   (  53.48,  14.06) 06/23/2021   11:54:33  (  53.48,  14.04)    1.16                45
 06/23/2021   12:42:49   ( -47.72,-175.95) 06/23/2021   12:42:20  ( -47.74,-175.82)   10.13                29
 06/26/2021   04:10:56   (  56.28, 128.46) 06/26/2021   04:11:49  (  56.28, 128.49)    1.94                53
 06/26/2021   04:58:58   ( -47.15, -59.77) 06/26/2021   04:58:39  ( -47.18, -59.72)    5.61                19
 06/28/2021   20:27:35   (  57.43,-116.30) 06/28/2021   20:28:37  (  57.43,-116.28)    0.90                62
 06/28/2021   21:15:12   ( -46.87,  56.29) 06/28/2021   21:15:02  ( -46.87,  56.29)    0.06                10
 07/01/2021   12:44:10   (  58.41,  -0.98) 07/01/2021   12:45:21  (  58.41,  -0.98)    0.34                71