Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 8 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)
 08/13/2025   03:48:38   (   0.00, 140.76) (   0.80, 144.31)  405.39                80
 08/14/2025   16:10:25   (  -0.00, 140.75) (   0.40, 139.05)  194.52                80
 08/15/2025   15:49:00   (   0.00, 140.74) (  -0.62, 143.58)  323.40                80
 08/17/2025   04:10:57   (  -0.01, 140.70) (  -0.55, 138.27)  276.82                80
 08/18/2025   03:54:52   (  -0.01, 140.69) (   0.48, 142.80)  241.53                80
 08/19/2025   16:16:39   (   0.01, 140.67) (   0.73, 137.54)  357.34                80
 08/20/2025   15:55:15   (   0.02, 140.65) (  -0.30, 142.07)  161.22                80
 08/22/2025   04:17:11   (  -0.02, 140.60) (  -0.85, 136.76)  437.90                80
 08/23/2025   04:01:06   (  -0.02, 140.58) (   0.13, 141.30)   81.62                80
 08/25/2025   16:01:30   (   0.02, 140.51) (  -0.00, 140.55)    4.97                80