Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 2 21.  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   (  78.42,-142.57) 03/01/2021   19:49:55  (  78.44,-146.58)   89.37                64
 03/01/2021   20:41:52   ( -78.74,  22.75) 03/01/2021   20:40:49  ( -78.75,  22.83)    2.05                63
 03/01/2021   21:32:37   (  78.76,-170.04) 03/01/2021   21:31:47  (  78.74,-170.03)    2.43                50
 03/01/2021   22:23:21   ( -78.74,  -2.63) 03/01/2021   22:22:49  ( -78.77,  -2.57)    3.00                32
 03/01/2021   23:14:06   (  78.76, 164.59) 03/01/2021   23:13:47  (  78.75, 164.57)    0.96                19
 03/02/2021   00:04:51   ( -78.78, -28.24) 03/02/2021   00:04:50  ( -78.75, -28.21)    3.66                 1
 03/02/2021   00:55:35   (  78.76, 139.21) 03/02/2021   00:55:47  (  78.77, 139.18)    0.91                12
 03/02/2021   01:46:20   ( -78.78, -53.61) 03/02/2021   01:46:50  ( -78.76, -53.60)    2.06                30
 03/02/2021   02:37:04   (  78.76, 113.84) 03/02/2021   02:37:47  (  78.78, 113.78)    2.35                43
 03/02/2021   03:27:49   ( -78.78, -78.99) 03/02/2021   03:28:50  ( -78.78, -78.99)    0.48                61
 03/02/2021   04:18:34   (  78.80,  88.22) 03/02/2021   04:19:47  (  78.79,  88.39)    3.65                73