Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 2 4.  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   02:52:46   ( -78.74, -70.00) 02/16/2021   02:51:32  ( -78.73, -70.58)   12.76                74
 02/16/2021   03:43:32   (  78.78,  97.05) 02/16/2021   03:42:32  (  78.76,  96.93)    2.96                60
 02/16/2021   04:34:16   ( -78.77, -95.61) 02/16/2021   04:33:31  ( -78.78, -95.73)    2.57                45
 02/16/2021   05:25:01   (  78.78,  71.67) 02/16/2021   05:24:32  (  78.78,  71.53)    2.97                29
 02/16/2021   06:15:46   ( -78.81,-121.22) 02/16/2021   06:15:31  ( -78.79,-121.11)    3.11                15
 02/16/2021   07:06:31   (  78.82,  46.06) 02/16/2021   07:06:32  (  78.79,  46.14)    3.14                 1
 02/16/2021   07:57:15   ( -78.81,-146.59) 02/16/2021   07:57:31  ( -78.81,-146.50)    1.99                16
 02/16/2021   08:48:00   (  78.82,  20.68) 02/16/2021   08:48:32  (  78.81,  20.75)    1.74                32
 02/16/2021   09:38:44   ( -78.81,-171.97) 02/16/2021   09:39:31  ( -78.82,-171.89)    1.89                47
 02/16/2021   10:29:29   (  78.82,  -4.69) 02/16/2021   10:30:32  (  78.82,  -4.64)    1.09                63