Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 30.  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)
 02/01/2021   07:54:32   ( -50.15,  95.53) 02/01/2021   07:55:44  ( -50.28,  94.90)   47.50                72
 02/01/2021   08:46:25   (  46.04, -98.88) 02/01/2021   08:46:18  (  46.09, -99.12)   19.44                 7
 02/01/2021   09:30:42   ( -67.99,  83.22) 02/01/2021   09:29:28  ( -68.14,  82.49)   34.60                74
 02/04/2021   01:02:43   (  46.14,  17.09) 02/04/2021   01:02:45  (  46.21,  16.80)   23.50                 2
 02/04/2021   01:52:47   ( -48.64,-174.58) 02/04/2021   01:51:34  ( -48.63,-174.63)    4.28                73
 02/06/2021   17:18:53   (  46.75, 133.26) 02/06/2021   17:19:05  (  46.79, 132.90)   28.09                12
 02/06/2021   18:09:45   ( -46.50, -59.54) 02/06/2021   18:08:40  ( -46.49, -59.59)    4.24                65
 02/09/2021   09:35:05   (  47.25,-110.61) 02/09/2021   09:35:26  (  47.31,-111.02)   32.32                21
 02/09/2021   10:26:14   ( -46.02,  56.20) 02/09/2021   10:25:17  ( -46.06,  56.13)    7.05                57
 02/12/2021   01:51:17   (  47.74,   5.53) 02/12/2021   01:51:47  (  47.82,   5.06)   36.52                30