Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 11 6.  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   (  78.05, 158.43) 11/18/2021   00:00:57  (  78.07, 158.44)    2.46                74
 11/18/2021   00:52:56   ( -78.07, -34.36) 11/18/2021   00:52:01  ( -78.07, -34.32)    1.04                55
 11/18/2021   01:43:40   (  78.05, 133.03) 11/18/2021   01:42:57  (  78.08, 132.98)    2.95                43
 11/18/2021   02:34:25   ( -78.07, -59.75) 11/18/2021   02:34:01  ( -78.08, -59.77)    0.87                24
 11/18/2021   03:25:09   (  78.10, 107.43) 11/18/2021   03:24:56  (  78.08, 107.52)    2.68                13
 11/18/2021   04:15:53   ( -78.08, -85.15) 11/18/2021   04:16:00  ( -78.09, -85.23)    2.15                 7
 11/18/2021   05:06:38   (  78.10,  82.03) 11/18/2021   05:06:56  (  78.09,  82.06)    1.51                18
 11/18/2021   05:57:23   ( -78.12,-110.76) 11/18/2021   05:58:00  ( -78.09,-110.69)    3.48                37
 11/18/2021   06:48:07   (  78.11,  56.64) 11/18/2021   06:48:56  (  78.10,  56.60)    1.36                49
 11/18/2021   07:38:52   ( -78.12,-136.15) 11/18/2021   07:40:00  ( -78.10,-136.14)    2.81                68
 11/18/2021   08:29:42   (  78.35,  29.92) 11/18/2021   08:30:50  (  78.32,  32.51)   58.20                68