Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2020 12 18.  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)
 12/20/2020   10:43:06   (  47.08,-127.95) 12/20/2020   10:43:24  (  47.09,-128.12)   12.44                18
 12/20/2020   11:32:26   ( -52.07,  41.57) 12/20/2020   11:31:29  ( -52.08,  41.60)    1.73                57
 12/23/2020   02:59:19   (  47.56, -11.83) 12/23/2020   02:59:45  (  47.60, -12.04)   16.42                26
 12/23/2020   03:49:04   ( -51.12, 157.04) 12/23/2020   03:48:15  ( -51.12, 157.04)    0.21                49
 12/25/2020   19:15:33   (  47.98, 104.27) 12/25/2020   19:16:07  (  48.04, 104.01)   20.49                34
 12/25/2020   20:06:08   ( -48.67, -88.13) 12/25/2020   20:05:26  ( -48.67, -88.11)    1.80                42
 12/28/2020   11:31:46   (  48.45,-139.61) 12/28/2020   11:32:28  (  48.53,-139.91)   24.55                42
 12/28/2020   12:22:40   ( -48.05,  27.53) 12/28/2020   12:22:06  ( -48.05,  27.52)    0.86                34
 12/31/2020   03:47:58   (  48.92, -23.48) 12/31/2020   03:48:48  (  49.02, -23.84)   28.43                50
 12/31/2020   04:39:35   ( -46.05, 142.64) 12/31/2020   04:39:08  ( -46.05, 142.63)    0.59                27