Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 11 13.  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)
 11/18/2021   00:02:11   (  78.04, 158.46) 11/18/2021   00:00:57  (  78.08, 158.46)    3.78                74
 11/18/2021   00:52:56   ( -78.06, -34.34) 11/18/2021   00:52:01  ( -78.07, -34.32)    1.22                55
 11/18/2021   01:43:41   (  78.09, 132.85) 11/18/2021   01:42:57  (  78.08, 133.01)    3.59                44
 11/18/2021   02:34:25   ( -78.07, -59.73) 11/18/2021   02:34:01  ( -78.08, -59.77)    1.66                24
 11/18/2021   03:25:10   (  78.09, 107.46) 11/18/2021   03:24:57  (  78.09, 107.55)    2.10                13
 11/18/2021   04:15:54   ( -78.07, -85.13) 11/18/2021   04:16:01  ( -78.09, -85.23)    2.87                 7
 11/18/2021   05:06:39   (  78.10,  82.06) 11/18/2021   05:06:57  (  78.10,  82.09)    0.63                18
 11/18/2021   05:57:24   ( -78.12,-110.73) 11/18/2021   05:58:01  ( -78.09,-110.68)    2.65                37
 11/18/2021   06:48:08   (  78.10,  56.67) 11/18/2021   06:48:57  (  78.10,  56.63)    0.89                49
 11/18/2021   07:38:53   ( -78.12,-136.13) 11/18/2021   07:40:01  ( -78.10,-136.14)    2.06                68
 11/18/2021   08:29:44   (  78.38,  29.73) 11/18/2021   08:30:51  (  78.33,  32.54)   63.26                67