Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 2 7.  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   ( -78.73, -69.94) 02/16/2021   02:51:32  ( -78.73, -70.57)   13.59                74
 02/16/2021   03:43:32   (  78.77,  97.12) 02/16/2021   03:42:32  (  78.77,  96.96)    3.57                60
 02/16/2021   04:34:17   ( -78.80, -95.79) 02/16/2021   04:33:31  ( -78.78, -95.71)    3.03                46
 02/16/2021   05:25:02   (  78.80,  71.51) 02/16/2021   05:24:32  (  78.78,  71.56)    2.69                30
 02/16/2021   06:15:46   ( -78.80,-121.16) 02/16/2021   06:15:31  ( -78.79,-121.10)    1.64                15
 02/16/2021   07:06:31   (  78.80,  46.13) 02/16/2021   07:06:32  (  78.80,  46.17)    1.17                 1
 02/16/2021   07:57:15   ( -78.80,-146.54) 02/16/2021   07:57:31  ( -78.81,-146.49)    1.24                16
 02/16/2021   08:48:00   (  78.80,  20.76) 02/16/2021   08:48:32  (  78.81,  20.77)    0.72                32
 02/16/2021   09:38:44   ( -78.80,-171.91) 02/16/2021   09:39:31  ( -78.82,-171.88)    2.39                47
 02/16/2021   10:29:29   (  78.80,  -4.61) 02/16/2021   10:30:32  (  78.82,  -4.62)    2.15                63
 02/16/2021   11:20:17   ( -78.95, 161.75) 02/16/2021   11:21:28  ( -78.94, 163.49)   37.27                71