Astronomy:Galactic Tick Day
| Galactic Tick Day | |
|---|---|
| Observed by | international |
| Type | Educational |
| 2023 date | 10 September |
| 2025 date | 5 June |
Galactic Tick Day is an awareness and education day that celebrates the movement of the Solar System around the Milky Way galaxy.[1][2][3][4]
The day occurs at a regular interval of 1.7361 years (or 633.7 days),[5] which is called a galactic tick. The interval is derived from one centi-arcsecond of a galactic year, which is the Solar System's roughly 225-million-year trip around the Galactic Center.[6] One galactic tick is only about 0.00000077 percent (1/[360 × 60 × 60 × 100]) of a full galactic year.[7]
Occurrences
The first Galactic Tick Day took place on the day Hans Lippershey filed the patent for the telescope on 2 October, 1608.[8] The first observance of the holiday was on 29 September 2016, the 235th Galactic Tick Day.[9] Below is a list of further observances:
| GTD number | Date | Ref |
|---|---|---|
| 1st | 2 October 1608 | [10] |
| 235th | 29 September 2016 | [10] |
| 236th | 26 June 2018 | [10] |
| 237th | 21 March 2020 | [10] |
| 238th | 15 December 2021 | [10] |
| 239th | 10 September 2023 | [10] |
| 240th | 5 June 2025 | [10] |
| 241st | 1 March 2027 | [10] |
| 242nd | 24 November 2028 | [10] |
| 243rd | 20 August 2030 | [10] |
See also
References
- ↑ "You Should Celebrate Galactic Tick Day, the New Holiday That Spans the Milky Way". 23 August 2016. http://www.popularmechanics.com/space/deep-space/news/a22492/galactic-tick-day-september-29.
- ↑ MacDonald, Fiona (29 September 2016). "Happy Galactic Tick Day! You just moved around the Milky Way". sciencealert.com. http://www.sciencealert.com/happy-galactic-tick-day-you-just-moved-around-the-milky-way.
- ↑ Schramm, Michael (29 September 2016). "What's a galactic tick (and why are we celebrating it today?)". http://michiganradio.org/post/whats-galactic-tick-and-why-are-we-celebrating-it-today.
- ↑ Sedacca, Matthew (29 September 2016). "Today Is "Galactic Tick Day"!". http://nautil.us/blog/today-is-galactic-tick-day.
- ↑ "Se acerca el Galactic Tick Day ¿Qué se celebra?". Europa Press (news agency) Ciencia Plus. http://www.europapress.es/ciencia/astronomia/noticia-acerca-galactic-tick-day-celebra-20160906172126.html.
- ↑ "'Galactic Tick Day' Celebrates Sun's Trip Around the Galaxy". 6 September 2016. http://www.space.com/33963-holiday-celebrates-suns-orbit-around-the-galaxy.html.
- ↑ "Strange Science: Earth reaches Galactic Tick Day!". KIAH News Fix. http://cw39.com/2016/09/28/earth-reaches-galactic-tick-day/.
- ↑ Gray, Frank. "California man hopes to inspire galactic awe". The Journal Gazette. http://www.journalgazette.net/news/local/frank-gray/Californiaman-hopesto-inspiregalactic-awe-14244216.
- ↑ Goldstone, Heather. "Galactic Tick Won't Give You Lyme, But Might Make Your Head Spin". WCAI. http://capeandislands.org/post/galactic-tick-wont-give-you-lyme-might-make-your-head-spin#stream/0.
- ↑ 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 @GalacticTick (22 March 2020). "The next Galactic Tick Day is December 15, 2021!". https://twitter.com/GalacticTick/status/1241746972601511937.
External links
 Galactic Tick Day from Galactic Tick on YouTube |
- Galactic Tick website
- IFLScience.com article about Galactic Tick Day
- Disquiet Junto Project 0248: Galactic Tick musical compositions on SoundCloud
- GalacticTick on GitHub
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