Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 7 7.  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)
 07/09/2021   14:23:00   ( -55.69, 155.84) 07/09/2021   14:23:30  ( -55.69, 155.84)    0.18                30
 07/09/2021   15:11:42   (  48.55, -33.34) 07/09/2021   15:10:58  (  48.55, -33.24)    7.50                44
 07/12/2021   06:39:39   ( -56.84, -88.89) 07/12/2021   06:40:20  ( -56.85, -88.92)    1.49                41
 07/12/2021   07:27:49   (  47.88,  82.89) 07/12/2021   07:27:17  (  47.89,  82.90)    1.30                32
 07/14/2021   22:56:40   ( -59.29,  25.48) 07/14/2021   22:57:31  ( -59.29,  25.50)    1.10                51
 07/14/2021   23:44:27   (  49.07,-161.68) 07/14/2021   23:44:06  (  49.07,-161.70)    1.49                21
 07/17/2021   15:13:14   ( -60.15, 140.81) 07/17/2021   15:14:16  ( -60.16, 140.80)    0.53                62
 07/17/2021   16:01:36   (  51.97, -47.07) 07/17/2021   16:01:25  (  51.97, -47.07)    0.10                11
 07/20/2021   07:29:48   ( -61.02,-103.88) 07/20/2021   07:31:01  ( -61.03,-103.92)    2.20                73