Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 6 17.  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)
 06/18/2021   03:20:15   (  50.24, 143.74) 06/18/2021   03:20:42  (  50.23, 143.75)    0.63                27
 06/18/2021   04:10:32   ( -48.84, -48.31) 06/18/2021   04:09:43  ( -48.87, -48.03)   20.61                49
 06/20/2021   19:37:02   (  51.91,-101.10) 06/20/2021   19:37:38  (  51.91,-101.10)    0.25                36
 06/20/2021   20:26:40   ( -48.27,  67.88) 06/20/2021   20:26:01  ( -48.30,  68.08)   15.40                39
 06/23/2021   11:53:47   (  53.41,  14.09) 06/23/2021   11:54:32  (  53.41,  14.08)    1.18                45
 06/23/2021   12:42:49   ( -47.70,-175.94) 06/23/2021   12:42:20  ( -47.73,-175.81)   10.17                29
 06/26/2021   04:10:55   (  56.22, 128.49) 06/26/2021   04:11:48  (  56.21, 128.52)    1.90                53
 06/26/2021   04:58:58   ( -47.13, -59.76) 06/26/2021   04:58:39  ( -47.17, -59.71)    5.80                19
 06/28/2021   20:27:34   (  57.37,-116.26) 06/28/2021   20:28:36  (  57.37,-116.24)    0.81                62