Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 2 22.  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)
 03/01/2021   19:50:59   (  78.41,-142.53) 03/01/2021   19:49:55  (  78.45,-146.56)   89.82                64
 03/01/2021   20:41:52   ( -78.74,  22.78) 03/01/2021   20:40:49  ( -78.76,  22.84)    2.36                63
 03/01/2021   21:32:37   (  78.75,-170.00) 03/01/2021   21:31:47  (  78.74,-170.01)    1.45                50
 03/01/2021   22:23:21   ( -78.74,  -2.59) 03/01/2021   22:22:49  ( -78.77,  -2.55)    3.66                32
 03/01/2021   23:14:06   (  78.75, 164.62) 03/01/2021   23:13:47  (  78.75, 164.59)    0.68                19
 03/02/2021   00:04:51   ( -78.78, -28.20) 03/02/2021   00:04:50  ( -78.75, -28.19)    2.74                 1
 03/02/2021   00:55:35   (  78.75, 139.25) 03/02/2021   00:55:47  (  78.77, 139.20)    1.92                12
 03/02/2021   01:46:20   ( -78.78, -53.58) 03/02/2021   01:46:50  ( -78.77, -53.58)    1.18                30
 03/02/2021   02:37:04   (  78.75, 113.88) 03/02/2021   02:37:47  (  78.78, 113.80)    3.42                43
 03/02/2021   03:27:49   ( -78.78, -78.95) 03/02/2021   03:28:50  ( -78.78, -78.97)    0.64                61
 03/02/2021   04:18:34   (  78.79,  88.26) 03/02/2021   04:19:47  (  78.80,  88.41)    3.20                73