[D66] De laatste schrikkelseconde?

René Oudeweg roudeweg at gmail.com
Mon Feb 12 17:14:02 CET 2024


Profound!


37s = TAI-UTC

reinold at fedora:~/Projects/palin$ python palin.py
Enter the number of odd palindromic numbers to generate and test: 200
Prime palindromic numbers:
1		3
2		5
3		7
4		101
5		131
6		151
7		181
8		191
9		313
10		353
11		373
12		383
13		727
14		757
15		787
16		797
17		919
18		929
19		10301
20		10501
21		10601
22		11311
23		11411
24		12421
25		12721
26		12821
27		13331 <-
28		13831
29		13931
30		14341
31		14741
32		15451
33		15551
34		16061
35		16361
36		16561
37		16661 <-


reinold at fedora:$ describe "International Atomic Time"  en --exact
en:
International Atomic Time
International Atomic Time (abbreviated TAI, from its French name temps 
atomique international) is a high-precision atomic coordinate time 
standard based on the notional passage of proper time on Earth's geoid. 
TAI is a weighted average of the time kept by over 450 atomic clocks in 
over 80 national laboratories worldwide. It is a continuous scale of 
time, without leap seconds, and it is the principal realisation of 
Terrestrial Time (with a fixed offset of epoch). It is the basis for 
Coordinated Universal Time (UTC), which is used for civil timekeeping 
all over the Earth's surface and which has leap seconds.
UTC deviates from TAI by a number of whole seconds. As of 1 January 
2017, when another leap second was put into effect, UTC is currently 
exactly 37 seconds behind TAI. The 37 seconds result from the initial 
difference of 10 seconds at the start of 1972, plus 27 leap seconds in 
UTC since 1972.
TAI may be reported using traditional means of specifying days, carried 
over from non-uniform time standards based on the rotation of the Earth. 
Specifically, both Julian days and the Gregorian calendar are used. TAI 
in this form was synchronised with Universal Time at the beginning of 
1958, and the two have drifted apart ever since, due primarily to the 
slowing rotation of the Earth.


https://en.wikipedia.org/wiki/International_Atomic_Time



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