Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 2 11.  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   ( -78.75, -70.09) 02/16/2021   02:51:32  ( -78.72, -70.67)   13.05                74
 02/16/2021   03:43:32   (  78.79,  96.99) 02/16/2021   03:42:31  (  78.79,  97.12)    2.86                61
 02/16/2021   04:34:16   ( -78.79, -95.70) 02/16/2021   04:33:30  ( -78.80, -95.56)    3.30                46
 02/16/2021   05:25:01   (  78.79,  71.62) 02/16/2021   05:24:31  (  78.80,  71.73)    3.11                30
 02/16/2021   06:15:45   ( -78.79,-121.07) 02/16/2021   06:15:31  ( -78.78,-121.20)    2.84                14
 02/16/2021   07:06:30   (  78.79,  46.24) 02/16/2021   07:06:32  (  78.78,  46.08)    3.48                 2
 02/16/2021   07:57:14   ( -78.79,-146.45) 02/16/2021   07:57:31  ( -78.79,-146.59)    3.16                17
 02/16/2021   08:48:00   (  78.82,  20.63) 02/16/2021   08:48:32  (  78.80,  20.69)    3.13                32
 02/16/2021   09:38:44   ( -78.82,-172.06) 02/16/2021   09:39:31  ( -78.81,-171.98)    2.47                47
 02/16/2021   10:29:29   (  78.82,  -4.75) 02/16/2021   10:30:32  (  78.81,  -4.71)    1.60                63