Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 3 11.  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)
 03/13/2021   13:24:15   ( -68.08, 160.28) 03/13/2021   13:25:28  ( -68.26, 161.43)   51.32                73
 03/13/2021   14:32:56   (  46.04, 174.73) 03/13/2021   14:32:25  (  46.12, 174.38)   28.51                31
 03/13/2021   15:00:24   ( -50.19, 148.07) 03/13/2021   14:59:12  ( -50.40, 149.10)   76.96                72
 03/16/2021   05:57:41   ( -49.16, 124.63) 03/16/2021   05:58:36  ( -49.31, 123.86)   58.23                55
 03/16/2021   06:49:16   (  46.05, -69.34) 03/16/2021   06:48:54  (  46.10, -69.75)   32.30                22
 03/16/2021   07:16:36   ( -49.71, -95.78) 03/16/2021   07:15:32  ( -49.89, -94.80)   73.31                64
 03/18/2021   22:13:52   ( -49.69,-119.21) 03/18/2021   22:14:56  ( -49.81,-120.05)   62.10                64
 03/18/2021   23:05:37   (  46.00,  46.58) 03/18/2021   23:05:23  (  46.07,  46.13)   35.90                14
 03/18/2021   23:44:05   ( -81.26, -60.85) 03/18/2021   23:42:52  ( -81.83, -60.92)   63.00                73
 03/21/2021   14:30:04   ( -50.15,  -3.06) 03/21/2021   14:31:16  ( -50.31,  -3.95)   65.71                72
 03/21/2021   15:21:57   (  46.01, 162.52) 03/21/2021   15:21:51  (  46.10, 162.02)   39.60                 6
 03/21/2021   16:05:48   ( -69.39, -13.49) 03/21/2021   16:04:35  ( -69.55, -14.60)   46.78                73
 03/24/2021   07:13:50   (  46.08,  86.22) 03/24/2021   07:14:30  (  46.19,  86.67)   36.67                40