Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2020 12 21.  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)
 12/23/2020   02:59:19   (  47.55, -11.84) 12/23/2020   02:59:45  (  47.59, -12.05)   16.51                26
 12/23/2020   03:49:07   ( -50.93, 156.96) 12/23/2020   03:48:18  ( -50.93, 156.96)    0.40                49
 12/25/2020   19:15:33   (  47.97, 104.27) 12/25/2020   19:16:07  (  48.03, 104.01)   20.62                34
 12/25/2020   20:05:42   ( -50.15, -87.48) 12/25/2020   20:05:01  ( -50.14, -87.50)    1.67                41
 12/28/2020   11:31:46   (  48.44,-139.61) 12/28/2020   11:32:28  (  48.53,-139.92)   24.70                42
 12/28/2020   12:22:43   ( -47.87,  27.45) 12/28/2020   12:22:09  ( -47.86,  27.45)    0.65                34
 12/31/2020   03:47:58   (  48.97, -23.45) 12/31/2020   03:48:49  (  49.01, -23.84)   28.56                51
 12/31/2020   04:39:36   ( -46.04, 142.64) 12/31/2020   04:39:09  ( -46.05, 142.63)    0.94                27
 12/31/2020   05:09:16   (  57.76, 111.98) 12/31/2020   05:08:04  (  58.03, 113.54)   97.16                72
 01/02/2021   20:04:11   (  49.39,  92.65) 01/02/2021   20:05:09  (  49.49,  92.24)   32.30                58
 01/02/2021   20:55:56   ( -46.05,-101.43) 01/02/2021   20:55:37  ( -46.05,-101.49)    4.20                19