Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 1 12.  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)
 01/13/2025   16:04:11   (   0.02, 140.75) (   0.05, 140.69)    8.28                80
 01/16/2025   04:04:37   (  -0.01, 140.74) (  -0.17, 139.93)   92.13                80
 01/17/2025   03:48:29   (  -0.01, 140.73) (   0.82, 144.47)  426.68                80
 01/18/2025   16:10:14   (   0.01, 140.69) (   0.35, 139.21)  168.93                80
 01/19/2025   15:48:46   (   0.01, 140.68) (  -0.65, 143.76)  350.19                80
 01/21/2025   04:10:39   (  -0.01, 140.66) (  -0.51, 138.46)  250.53                80
 01/22/2025   03:54:31   (  -0.01, 140.64) (   0.49, 143.01)  269.17                80
 01/23/2025   16:16:15   (   0.02, 140.59) (   0.67, 137.75)  325.00                80
 01/24/2025   15:54:48   (   0.01, 140.57) (  -0.34, 142.29)  194.68                80