Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 4 19.  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)
 04/20/2021   02:47:48   ( -46.08, -27.10) 04/20/2021   02:48:40  ( -46.13, -26.88)   17.63                52
 04/20/2021   04:03:01   (  46.03, -27.55) 04/20/2021   04:01:58  (  46.14, -28.04)   40.20                63
 04/22/2021   19:04:08   ( -46.10,  88.83) 04/22/2021   19:05:09  ( -46.14,  89.00)   13.52                61
 04/22/2021   19:55:10   (  46.96,-104.21) 04/22/2021   19:54:54  (  47.05,-103.72)   38.32                16
 04/25/2021   11:20:27   ( -46.06,-155.21) 04/25/2021   11:21:37  ( -46.11,-155.11)    9.70                70
 04/25/2021   12:11:20   (  46.41,  11.95) 04/25/2021   12:11:13  (  46.48,  12.37)   33.55                 7
 04/28/2021   03:39:58   ( -56.99, -44.59) 04/28/2021   03:41:11  ( -57.03, -44.20)   23.53                73
 04/28/2021   04:27:34   (  46.09, 128.02) 04/28/2021   04:27:36  (  46.17, 128.37)   29.10                 2
 04/30/2021   20:02:03   ( -75.52,  47.08) 04/30/2021   20:03:16  ( -75.77,  48.62)   50.72                73
 04/30/2021   20:43:53   (  46.11,-116.06) 04/30/2021   20:44:03  (  46.16,-115.74)   24.98                10