Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 11 8.  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   00:02:10   (  78.07, 158.33) 11/18/2021   00:00:58  (  78.04, 158.26)    3.25                72
 11/18/2021   00:52:53   ( -78.05, -34.26) 11/18/2021   00:52:00  ( -78.08, -34.28)    3.40                53
 11/18/2021   01:43:38   (  78.07, 132.93) 11/18/2021   01:42:56  (  78.09, 133.03)    2.67                42
 11/18/2021   02:34:23   ( -78.09, -59.87) 11/18/2021   02:34:00  ( -78.09, -59.73)    3.24                23
 11/18/2021   03:25:07   (  78.08, 107.53) 11/18/2021   03:24:56  (  78.09, 107.57)    1.79                11
 11/18/2021   04:15:52   ( -78.10, -85.27) 11/18/2021   04:16:00  ( -78.09, -85.19)    1.94                 8
 11/18/2021   05:06:36   (  78.08,  82.13) 11/18/2021   05:06:56  (  78.10,  82.11)    1.73                20
 11/18/2021   05:57:21   ( -78.10,-110.67) 11/18/2021   05:58:00  ( -78.10,-110.64)    0.70                39
 11/18/2021   06:48:05   (  78.09,  56.73) 11/18/2021   06:48:56  (  78.11,  56.65)    2.55                51
 11/18/2021   07:38:50   ( -78.11,-136.07) 11/18/2021   07:40:00  ( -78.11,-136.10)    0.81                70