Galactic Tick Day Explained
| Holiday Name: | Galactic Tick Day |
| Type: | educational |
| Observedby: | international |
| Date2023: | 10 September |
| Date2025: | 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 Galactic Tick Day was retroactively calculated to begin 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 | |
| 236th | 26 June 2018 | |
| 237th | 21 March 2020 | |
| 238th | 15 December 2021 | |
| 239th | 10 September 2023 | |
| 240th | 5 June 2025 | |
| 241st | 1 March 2027 | |
| 242nd | 24 November 2028 | |
| 243rd | 20 August 2030 | | |
See also
External links
Notes and References
- Web site: You Should Celebrate Galactic Tick Day, the New Holiday That Spans the Milky Way. Popular Mechanics. 23 August 2016.
- Web site: Happy Galactic Tick Day! You just moved around the Milky Way. MacDonald. Fiona. 29 September 2016 . sciencealert.com.
- Web site: What's a galactic tick (and why are we celebrating it today?). Schramm. Michael. Michigan Radio. 29 September 2016.
- Web site: Today Is "Galactic Tick Day"!. Sedacca. Matthew. 29 September 2016. Nautilus (science magazine). 1 October 2016. 21 March 2020. https://web.archive.org/web/20200321060102/http://nautil.us/blog/today-is-galactic-tick-day. dead.
- News: Se acerca el Galactic Tick Day ¿Qué se celebra?. Europa Press (news agency) Ciencia Plus.
- Web site: 'Galactic Tick Day' Celebrates Sun's Trip Around the Galaxy. Space.com. 6 September 2016.
- News: Strange Science: Earth reaches Galactic Tick Day!. KIAH News Fix.
- News: California man hopes to inspire galactic awe. The Journal Gazette. Gray. Frank. 28 September 2016. 21 March 2020. https://web.archive.org/web/20200321060107/https://www.journalgazette.net/news/local/frank-gray/Californiaman-hopesto-inspiregalactic-awe-14244216. dead.
- News: Galactic Tick Won't Give You Lyme, But Might Make Your Head Spin. WCAI. Goldstone. Heather. 27 September 2016.
- GalacticTick . 1241746972601511937 . The next Galactic Tick Day is December 15, 2021! . 22 March 2020 . 9 September 2023.
