Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 10.  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   (  78.13,  -2.46) 10/21/2021   10:41:54  (  78.13,  -2.47)    0.41                75
 10/21/2021   11:33:53   ( -78.14, 164.83) 10/21/2021   11:32:51  ( -78.14, 164.85)    0.42                62
 10/21/2021   12:24:38   (  78.14, -27.85) 10/21/2021   12:23:54  (  78.14, -27.92)    1.69                44
 10/21/2021   13:15:22   ( -78.14, 139.44) 10/21/2021   13:14:51  ( -78.15, 139.40)    1.29                31
 10/21/2021   14:06:07   (  78.14, -53.24) 10/21/2021   14:05:54  (  78.15, -53.38)    3.12                13
 10/21/2021   14:56:51   ( -78.14, 114.05) 10/21/2021   14:56:51  ( -78.16, 113.95)    2.67                 0
 10/21/2021   15:47:37   (  78.18, -78.85) 10/21/2021   15:47:54  (  78.15, -78.83)    3.45                17
 10/21/2021   16:38:21   ( -78.19,  88.45) 10/21/2021   16:38:51  ( -78.16,  88.50)    2.91                30
 10/21/2021   17:29:06   (  78.19,-104.24) 10/21/2021   17:29:54  (  78.16,-104.28)    3.11                48
 10/21/2021   18:19:50   ( -78.19,  63.06) 10/21/2021   18:20:51  ( -78.17,  63.05)    2.14                61
 10/21/2021   19:10:40   (  78.39,-130.74) 10/21/2021   19:11:49  (  78.35,-128.58)   48.54                69