File:Leapsecond.ut1-utc.svg
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Summary
DescriptionLeapsecond.ut1-utc.svg |
English: Plot showing the difference UT1−UTC in seconds. Vertical segments correspond to leap seconds. Red part of graph was prediction (future values) at the time the file was made.
Čeština: Graf zobrazující rozdíl UT1−UTC v sekundách. Svislé úseky odpovídají přestupným sekundám. Červená část je předpověď budoucích hodnot (v okamžiku vytvoření grafu). |
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Date | 2017-01-05, last update 2024-01-03 | ||||||
Source | Own work using: https://maia.usno.navy.mil/ser7/finals.all | ||||||
Author |
Tomia (talk · contribs) Petr Kadlec (talk · contribs) Gordon P. Hemsley (talk · contribs) RP88 (talk · contribs) |
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Permission (Reusing this file) |
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SVG development InfoField |
Source code
Generated using the following scripts:
wget https://maia.usno.navy.mil/ser7/finals.all cut -c 1-2,3-4,5-6,8-15,58,59-68 --output-delimiter " " finals.all > finals-cut.txt grep "P" finals-cut.txt > finals-pred.txt grep "I" finals-cut.txt > finals-iers.txt gnuplot leapsecs.gnuplot
leapsecs.gnuplot
contains commands for gnuplot 5.0:
set xdata time set timefmt "%Y-%m-%d" set format x "%Y" set xrange ["1973-01-01":"2026-01-01"] set yrange [-0.9:0.9] set grid lt 3 lc 0 set terminal svg font "Arial,16" set style line 1 lc rgb 'dark-green' lt 1 set style line 2 lc rgb 'red' lt 1 unset key makedate(y,m,d,j) = sprintf("%04d-%02d-%02d", (j <= 51543 ? 1900 + y : 2000 + y), m, d) set output 'Leapsecond.ut1-utc.svg' plot \ 'finals-iers.txt' \ using (makedate($1,$2,$3,$4)):($6) \ with lines linestyle 1 title 'Measured', \ 'finals-pred.txt' \ using (makedate($1,$2,$3,$4)):($6) \ with lines linestyle 2 title 'Predicted' set output
Items portrayed in this file
depicts
image/svg+xml
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:57, 3 January 2024 | 600 × 480 (301 KB) | RP88 | Updated to use data available as of 2024-01-03. Prediction through 2025. | |
03:17, 4 August 2023 | 600 × 480 (298 KB) | RP88 | Updated to use data available as of 2023-08-03. Prediction through 2024. | ||
15:17, 30 September 2022 | 600 × 480 (246 KB) | Mormegil | updated to current data | ||
08:59, 1 April 2022 | 600 × 480 (242 KB) | Mormegil | updated to current data | ||
09:02, 4 January 2021 | 600 × 480 (238 KB) | Mormegil | updated to current data | ||
08:16, 29 April 2020 | 600 × 480 (235 KB) | Mormegil | update data | ||
14:00, 24 September 2019 | 600 × 480 (234 KB) | Mormegil | updated to current data with prediction until 2020-09 | ||
10:46, 23 January 2019 | 600 × 480 (231 KB) | Mormegil | updated to current data | ||
07:47, 13 August 2018 | 600 × 480 (229 KB) | Mormegil | updated to current data | ||
21:34, 5 January 2017 | 600 × 480 (221 KB) | RP88 | Updated to use data available as of 2017-01-05, post leap second. |
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Metadata
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Short title | Gnuplot |
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Image title | Produced by GNUPLOT 5.4 patchlevel 9 |
Width | 600 |
Height | 480 |
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