Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 12.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2021   10:43:09   (  78.14,  -2.53) 10/21/2021   10:41:54  (  78.11,  -2.61)    4.58                75
 10/21/2021   11:33:53   ( -78.15, 164.76) 10/21/2021   11:32:50  ( -78.15, 164.93)    3.85                63
 10/21/2021   12:24:38   (  78.15, -27.92) 10/21/2021   12:23:53  (  78.15, -27.84)    1.88                45
 10/21/2021   13:15:22   ( -78.15, 139.37) 10/21/2021   13:14:50  ( -78.16, 139.48)    2.62                32
 10/21/2021   14:06:07   (  78.15, -53.31) 10/21/2021   14:05:53  (  78.16, -53.29)    0.94                14
 10/21/2021   14:56:51   ( -78.16, 113.98) 10/21/2021   14:56:50  ( -78.17, 114.03)    1.72                 1
 10/21/2021   15:47:36   (  78.16, -78.70) 10/21/2021   15:47:53  (  78.17, -78.74)    1.58                17
 10/21/2021   16:38:20   ( -78.16,  88.59) 10/21/2021   16:38:50  ( -78.18,  88.58)    1.78                30
 10/21/2021   17:29:05   (  78.16,-104.09) 10/21/2021   17:29:53  (  78.17,-104.19)    2.88                48
 10/21/2021   18:19:49   ( -78.16,  63.20) 10/21/2021   18:20:50  ( -78.18,  63.13)    2.72                61
 10/21/2021   19:10:39   (  78.36,-130.59) 10/21/2021   19:11:49  (  78.33,-128.73)   41.86                70