Gnuplot
Produced by GNUPLOT 5.4 patchlevel 3
-35
-30
-25
-20
-15
-10
-5
0
5
1960
1970
1980
1990
2000
2010
2020
difference from atomic time [second]
Calendar Year
gnuplot_plot_1
gnuplot_plot_2
gnuplot_plot_3
gnuplot_plot_4
gnuplot_plot_5
gnuplot_plot_6
gnuplot_plot_7
gnuplot_plot_8
gnuplot_plot_9
gnuplot_plot_10
gnuplot_plot_11
gnuplot_plot_12
gnuplot_plot_13
gnuplot_plot_14
gnuplot_plot_15
gnuplot_plot_16
gnuplot_plot_17
gnuplot_plot_18
early atomic time
TAI (only available in laboratories, never broadcast)
also IEEE 1588-2008 (PTP), ITU-T Rec. G.8265.1
1958-01-01
10 seconds
(elastic)
27 seconds
(leap)
8.000082 s
(POSIX)
18 seconds
(GPS - UTC)
since 2017-01-01 (TAI - UTC) = 37 seconds
LORAN-C navigation time broadcasts (ended in 2010)
also "right" zoneinfo, IBM z/OS, IEEE 1588-2002 App. B (PTP)
GPS navigation time broadcasts
also Galileo, ATSC, Android, IRNWT
BeiDou1
BeiDou
MSW10T
radio
broadcasts
UT (time and date from counting
days of earth rotating w.r.t. the sun)
UTC broadcasts with leap seconds ITU-R Rec. TF.460
Steve Allen https://www.ucolick.org/~sla/leapsecs/
Time scales since the cesium atomic frequency standard