Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 1 10.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/11/2025   04:01:14   (  -0.01, 140.77) (   0.14, 141.40)   72.50                80
 01/13/2025   16:04:12   (   0.01, 140.75) (   0.00, 140.68)    8.34                80
 01/16/2025   04:04:37   (  -0.01, 140.74) (  -0.18, 139.93)   91.87                80
 01/17/2025   03:48:29   (  -0.00, 140.72) (   0.82, 144.47)  426.96                80
 01/18/2025   16:10:14   (   0.00, 140.69) (   0.36, 139.21)  168.50                80
 01/19/2025   15:48:47   (   0.00, 140.67) (  -0.70, 143.75)  350.69                80
 01/21/2025   04:10:38   (  -0.00, 140.65) (  -0.52, 138.46)  250.05                80
 01/22/2025   03:54:32   (  -0.00, 140.63) (   0.55, 142.99)  269.74                80
 01/23/2025   16:16:15   (   0.01, 140.59) (   0.67, 137.75)  324.24                80
 01/24/2025   15:54:49   (   0.01, 140.56) (  -0.40, 142.28)  195.55                80