Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 11 9.  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, 158.42) 11/18/2021   00:00:57  (  78.07, 158.43)    2.29                74
 11/18/2021   00:52:56   ( -78.07, -34.36) 11/18/2021   00:52:01  ( -78.07, -34.34)    0.62                55
 11/18/2021   01:43:40   (  78.05, 133.03) 11/18/2021   01:42:57  (  78.08, 132.97)    2.81                43
 11/18/2021   02:34:25   ( -78.07, -59.75) 11/18/2021   02:34:01  ( -78.08, -59.79)    0.97                24
 11/18/2021   03:25:10   (  78.10, 107.42) 11/18/2021   03:24:57  (  78.08, 107.52)    2.76                13
 11/18/2021   04:15:54   ( -78.08, -85.15) 11/18/2021   04:16:01  ( -78.08, -85.25)    2.38                 7
 11/18/2021   05:06:39   (  78.10,  82.03) 11/18/2021   05:06:57  (  78.09,  82.06)    1.61                18
 11/18/2021   05:57:24   ( -78.12,-110.76) 11/18/2021   05:58:01  ( -78.09,-110.70)    3.51                37
 11/18/2021   06:48:08   (  78.11,  56.63) 11/18/2021   06:48:57  (  78.10,  56.60)    1.41                49
 11/18/2021   07:38:53   ( -78.12,-136.15) 11/18/2021   07:40:01  ( -78.10,-136.16)    2.96                68
 11/18/2021   08:29:43   (  78.35,  29.92) 11/18/2021   08:30:51  (  78.33,  32.51)   58.25                68