Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 11 17.  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   (  78.06, 158.34) 11/18/2021   00:00:57  (  78.06, 158.37)    0.70                74
 11/18/2021   00:52:55   ( -78.05, -34.27) 11/18/2021   00:52:01  ( -78.05, -34.43)    3.80                54
 11/18/2021   01:43:40   (  78.07, 132.95) 11/18/2021   01:42:57  (  78.07, 132.91)    0.87                43
 11/18/2021   02:34:25   ( -78.09, -59.87) 11/18/2021   02:34:01  ( -78.06, -59.88)    3.41                24
 11/18/2021   03:25:09   (  78.07, 107.55) 11/18/2021   03:24:57  (  78.07, 107.45)    2.34                12
 11/18/2021   04:15:54   ( -78.10, -85.27) 11/18/2021   04:16:01  ( -78.07, -85.34)    3.51                 7
 11/18/2021   05:06:38   (  78.08,  82.16) 11/18/2021   05:06:57  (  78.08,  81.99)    3.82                19
 11/18/2021   05:57:23   ( -78.10,-110.66) 11/18/2021   05:58:00  ( -78.11,-110.57)    2.43                37
 11/18/2021   06:48:08   (  78.12,  56.55) 11/18/2021   06:48:57  (  78.09,  56.53)    3.86                49
 11/18/2021   07:38:52   ( -78.11,-136.05) 11/18/2021   07:40:00  ( -78.12,-136.03)    1.76                68
 11/18/2021   08:29:43   (  78.36,  29.83) 11/18/2021   08:30:51  (  78.32,  32.44)   58.83                68