Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2023 4 8.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2023   23:22:01   (  73.42,-171.19) 04/09/2023   23:23:12  (  73.31,-170.55)   24.15                71
 04/10/2023   00:12:39   ( -73.11,  -3.17) 04/10/2023   00:12:39  ( -73.12,  -3.27)    3.17                 0
 04/10/2023   01:03:17   (  72.65, 165.13) 04/10/2023   01:02:08  (  72.71, 163.60)   51.25                69
 04/12/2023   11:26:12   ( -73.72,-172.89) 04/12/2023   11:27:21  ( -73.60,-171.03)   59.66                69
 04/12/2023   12:16:48   (  73.17,  -4.30) 04/12/2023   12:16:51  (  73.14,  -4.30)    2.81                 3
 04/12/2023   13:07:29   ( -73.01, 163.38) 04/12/2023   13:06:16  ( -73.06, 163.19)    8.93                73
 04/14/2023   23:30:23   (  73.89,-174.30) 04/14/2023   23:31:29  (  73.81,-171.66)   81.97                66
 04/15/2023   00:20:53   ( -73.18,  -5.31) 04/15/2023   00:21:04  ( -73.20,  -5.28)    2.31                11
 04/15/2023   01:11:39   (  73.12, 162.12) 04/15/2023   01:10:27  (  73.11, 162.21)    3.27                72
 04/17/2023   12:25:01   (  73.21,  -6.38) 04/17/2023   12:25:15  (  73.22,  -6.31)    2.13                14
 04/17/2023   13:15:44   ( -73.14, 161.10) 04/17/2023   13:14:40  ( -73.13, 161.17)    2.52                64
 04/20/2023   00:29:06   ( -73.23,  -7.41) 04/20/2023   00:29:28  ( -73.21,  -7.40)    2.56                22
 04/20/2023   01:19:51   (  73.14, 160.11) 04/20/2023   01:18:51  (  73.12, 160.08)    2.06                60
 04/22/2023   12:33:13   (  73.25,  -8.43) 04/22/2023   12:33:38  (  73.22,  -8.44)    2.49                25
 04/22/2023   13:23:56   ( -73.16, 159.07) 04/22/2023   13:23:03  ( -73.14, 159.04)    2.95                53