Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 2 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)
 02/16/2021   02:52:47   ( -78.75, -70.09) 02/16/2021   02:51:33  ( -78.71, -70.68)   13.28                74
 02/16/2021   03:43:33   (  78.79,  96.96) 02/16/2021   03:42:32  (  78.79,  97.09)    2.86                61
 02/16/2021   04:34:17   ( -78.79, -95.70) 02/16/2021   04:33:31  ( -78.80, -95.57)    3.06                46
 02/16/2021   05:25:02   (  78.79,  71.59) 02/16/2021   05:24:32  (  78.80,  71.70)    2.58                30
 02/16/2021   06:15:46   ( -78.79,-121.08) 02/16/2021   06:15:32  ( -78.78,-121.21)    3.07                14
 02/16/2021   07:06:31   (  78.79,  46.21) 02/16/2021   07:06:32  (  78.81,  46.30)    3.19                 1
 02/16/2021   07:57:15   ( -78.79,-146.45) 02/16/2021   07:57:32  ( -78.79,-146.60)    3.26                17
 02/16/2021   08:47:59   (  78.79,  20.84) 02/16/2021   08:48:32  (  78.79,  20.66)    3.91                33
 02/16/2021   09:38:44   ( -78.83,-172.06) 02/16/2021   09:39:31  ( -78.81,-171.99)    2.56                47
 02/16/2021   10:29:29   (  78.83,  -4.78) 02/16/2021   10:30:32  (  78.81,  -4.73)    2.45                63