Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 1 6.  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)
 01/06/2020   11:28:38   ( -68.79,-173.07) 01/06/2020   11:29:18  ( -68.79,-173.12)    1.99                40
 01/06/2020   12:19:23   (  68.72,  -5.66) 01/06/2020   12:18:45  (  68.70,  -5.60)    3.55                38
 01/09/2020   03:45:04   ( -68.84, -57.24) 01/09/2020   03:45:46  ( -68.82, -57.20)    2.54                42
 01/09/2020   04:35:47   (  68.66, 110.31) 01/09/2020   04:35:14  (  68.67, 110.25)    2.63                33
 01/11/2020   20:01:28   ( -68.84,  58.66) 01/11/2020   20:02:13  ( -68.85,  58.71)    2.37                45
 01/11/2020   20:52:12   (  68.71,-133.86) 01/11/2020   20:51:41  (  68.69,-133.84)    2.83                31
 01/11/2020   21:42:34   ( -67.60,  34.88) 01/11/2020   21:41:28  ( -67.63,  32.53)   99.29                66
 01/14/2020   12:17:53   ( -68.84, 174.56) 01/14/2020   12:18:42  ( -68.82, 174.55)    2.82                49
 01/14/2020   13:08:37   (  68.72, -17.97) 01/14/2020   13:08:09  (  68.71, -17.94)    1.53                28
 01/14/2020   13:59:01   ( -67.71, 150.64) 01/14/2020   13:57:54  ( -67.76, 148.57)   87.74                67
 01/17/2020   04:34:18   ( -68.84, -69.54) 01/17/2020   04:35:10  ( -68.83, -69.55)    1.34                52
 01/17/2020   05:25:02   (  68.72,  97.93) 01/17/2020   05:24:37  (  68.72,  97.96)    1.34                25
 01/17/2020   06:15:28   ( -67.82, -93.59) 01/17/2020   06:14:20  ( -67.89, -95.40)   76.38                68
 01/19/2020   20:50:43   ( -68.85,  46.35) 01/19/2020   20:51:38  ( -68.84,  46.35)    0.69                55
 01/19/2020   21:41:27   (  68.73,-146.18) 01/19/2020   21:41:05  (  68.73,-146.15)    1.43                22
 01/19/2020   22:31:55   ( -67.93,  22.17) 01/19/2020   22:30:46  ( -68.01,  20.62)   65.17                69