Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 2 27.  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)
 02/28/2021   04:20:32   ( -46.24, 147.81) 02/28/2021   04:20:36  ( -46.29, 147.39)   33.34                 4
 02/28/2021   05:11:17   (  46.00, -44.95) 02/28/2021   05:10:04  (  46.04, -45.06)    9.06                73
 03/02/2021   20:36:44   ( -46.72, -96.06) 03/02/2021   20:36:56  ( -46.81, -96.53)   37.33                12
 03/02/2021   21:27:37   (  46.02,  70.99) 03/02/2021   21:26:33  (  46.03,  70.82)   12.90                64
 03/05/2021   12:28:44   ( -46.11,-172.63) 03/05/2021   12:29:42  ( -46.19,-172.14)   38.49                58
 03/05/2021   13:43:56   (  46.04,-173.07) 03/05/2021   13:43:00  (  46.07,-173.28)   16.26                56
 03/08/2021   04:45:04   ( -46.09, -56.69) 03/08/2021   04:46:10  ( -46.15, -56.24)   34.95                66
 03/08/2021   06:00:17   (  46.00, -57.16) 03/08/2021   05:59:29  (  46.05, -57.40)   19.78                48
 03/10/2021   21:02:11   ( -48.77,  58.14) 03/10/2021   21:03:24  ( -48.84,  58.60)   34.44                73