hamclock has the last historical value as current - however this is of type 'observed'. The current time is always in the next 3 hour period as estimated.
For the best estimate of what k-index is currently, that is to say 'right now', the first estimated value should be used.
See example below of script script that analysed Fetching json data as well as the daily data and 3 hour at 3/16 20:53, that current time would have been in the 18-21 bin.
csi and ohb return 2.33 which is part of the15-18 bin and is the last observed value.
'Current' k-index, not the last observed k-index, would be in the 18-21 estimate and should have been 3.33
dave@victus:~/ohb/allfiles/kindex$ ./samplejson.bash 2603162052 '3-16 (15|18)'
kindex csi
2.33
kindex ohb
2.33
daily
2026 03 16 -1 3 3 2 2 3 2-1-1 -1 2 2 2 4 6 4-1-1 14 3.00 3.00 2.00 2.00 3.33 2.33 -1.00 -1.00
3 day forecast
NOAA Kp index forecast 16 Mar - 18 Mar
Mar 16 Mar 17 Mar 18
00-03UT 3.67 2.67 2.67
03-06UT 3.67 3.00 2.33
06-09UT 3.00 2.33 2.00
09-12UT 2.33 2.00 1.33
12-15UT 2.00 2.00 1.67
15-18UT 2.67 2.00 2.00
18-21UT 3.00 2.33 2.33
21-00UT 3.00 2.67 2.67
json forecast
"2026-03-16 15:00:00",
"2.33",
"observed",
null
],
"2026-03-16 18:00:00",
"3.33",
"estimated",
null
],
hamclock has the last historical value as current - however this is of type 'observed'. The current time is always in the next 3 hour period as estimated.
For the best estimate of what k-index is currently, that is to say 'right now', the first estimated value should be used.
See example below of script script that analysed Fetching json data as well as the daily data and 3 hour at 3/16 20:53, that current time would have been in the 18-21 bin.
csi and ohb return 2.33 which is part of the15-18 bin and is the last observed value.
'Current' k-index, not the last observed k-index, would be in the 18-21 estimate and should have been 3.33
dave@victus:~/ohb/allfiles/kindex$ ./samplejson.bash 2603162052 '3-16 (15|18)'
kindex csi
2.33
kindex ohb
2.33
daily
2026 03 16 -1 3 3 2 2 3 2-1-1 -1 2 2 2 4 6 4-1-1 14 3.00 3.00 2.00 2.00 3.33 2.33 -1.00 -1.00
3 day forecast
NOAA Kp index forecast 16 Mar - 18 Mar
Mar 16 Mar 17 Mar 18
00-03UT 3.67 2.67 2.67
03-06UT 3.67 3.00 2.33
06-09UT 3.00 2.33 2.00
09-12UT 2.33 2.00 1.33
12-15UT 2.00 2.00 1.67
15-18UT 2.67 2.00 2.00
18-21UT 3.00 2.33 2.33
21-00UT 3.00 2.67 2.67
json forecast
"2026-03-16 15:00:00",
"2.33",
"observed",
null
],
],