Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2020 12 23.  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, -11.83) 12/23/2020   02:59:45  (  47.60, -12.04)   16.60                26
 12/23/2020   03:49:08   ( -50.88, 156.93) 12/23/2020   03:48:19  ( -50.88, 156.94)    0.42                49
 12/25/2020   19:15:33   (  47.97, 104.27) 12/25/2020   19:16:07  (  48.04, 104.01)   20.71                34
 12/25/2020   20:05:42   ( -50.15, -87.48) 12/25/2020   20:05:01  ( -50.15, -87.50)    1.71                41
 12/28/2020   11:31:46   (  48.44,-139.60) 12/28/2020   11:32:28  (  48.53,-139.91)   24.76                42
 12/28/2020   12:22:42   ( -47.92,  27.48) 12/28/2020   12:22:08  ( -47.92,  27.47)    0.78                34
 12/31/2020   03:47:58   (  48.91, -23.48) 12/31/2020   03:48:48  (  49.01, -23.84)   28.61                50
 12/31/2020   04:39:35   ( -46.04, 142.64) 12/31/2020   04:39:08  ( -46.04, 142.63)    0.82                27
 12/31/2020   05:09:14   (  57.70, 112.02) 12/31/2020   05:08:02  (  57.97, 113.58)   97.19                72
 01/02/2021   20:04:11   (  49.38,  92.66) 01/02/2021   20:05:09  (  49.48,  92.24)   32.29                58
 01/02/2021   20:55:56   ( -46.05,-101.43) 01/02/2021   20:55:37  ( -46.04,-101.49)    4.41                19
 01/02/2021   21:30:47   (  74.53,-152.98) 01/02/2021   21:29:34  (  74.92,-150.72)   79.08                73
 01/05/2021   12:20:24   (  49.85,-151.21) 01/05/2021   12:21:30  (  49.95,-151.69)   35.85                66
 01/05/2021   13:12:17   ( -46.05,  14.50) 01/05/2021   13:12:05  ( -46.10,  14.41)    8.15                12