Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 4 14.  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)
 04/14/2021   18:15:09   ( -46.07, 101.03) 04/14/2021   18:15:43  ( -46.15, 101.36)   26.32                34
 04/14/2021   19:25:31   (  62.60, 109.87) 04/14/2021   19:24:18  (  62.75, 108.96)   49.30                73
 04/17/2021   10:31:29   ( -46.09,-143.04) 04/17/2021   10:32:11  ( -46.14,-142.76)   22.25                42
 04/17/2021   11:46:42   (  46.01,-143.49) 04/17/2021   11:45:30  (  46.07,-143.94)   35.46                72
 04/20/2021   02:47:49   ( -46.10, -27.11) 04/20/2021   02:48:39  ( -46.14, -26.87)   18.29                50
 04/20/2021   04:03:01   (  46.06, -27.54) 04/20/2021   04:01:57  (  46.13, -28.04)   39.44                64
 04/22/2021   19:04:08   ( -46.06,  88.85) 04/22/2021   19:05:06  ( -46.08,  89.03)   14.31                58
 04/22/2021   19:55:12   (  47.05,-104.25) 04/22/2021   19:54:54  (  47.17,-103.76)   39.44                18
 04/25/2021   11:20:27   ( -46.08,-155.23) 04/25/2021   11:21:33  ( -46.09,-155.09)   10.41                66
 04/25/2021   12:11:23   (  46.61,  11.87) 04/25/2021   12:11:13  (  46.71,  12.30)   35.05                10
 04/28/2021   03:37:17   ( -47.83, -40.00) 04/28/2021   03:38:30  ( -47.83, -39.87)    9.71                73