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]
| Galactic Tick Day | |
|---|---|
| Observed by | international |
| Type | Educational |
| 2023 date | 10 September |
| 2025 date | 5 June |
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 edit
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 | [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 edit
References edit
- ^ "You Should Celebrate Galactic Tick Day, the New Holiday That Spans the Milky Way". Popular Mechanics. 23 August 2016.
- ^ MacDonald, Fiona (29 September 2016). "Happy Galactic Tick Day! You just moved around the Milky Way". sciencealert.com.
- ^ Schramm, Michael (29 September 2016). "What's a galactic tick (and why are we celebrating it today?)". Michigan Radio.
- ^ Sedacca, Matthew (29 September 2016). "Today Is "Galactic Tick Day"!". Nautilus (science magazine). Archived from the original on 21 March 2020. Retrieved 1 October 2016.
- ^ "Se acerca el Galactic Tick Day ¿Qué se celebra?". Europa Press (news agency) Ciencia Plus.
- ^ "'Galactic Tick Day' Celebrates Sun's Trip Around the Galaxy". Space.com. 6 September 2016.
- ^ "Strange Science: Earth reaches Galactic Tick Day!". KIAH News Fix.
- ^ Gray, Frank. "California man hopes to inspire galactic awe". The Journal Gazette. Archived from the original on 21 March 2020. Retrieved 28 September 2016.
- ^ Goldstone, Heather. "Galactic Tick Won't Give You Lyme, But Might Make Your Head Spin". WCAI. Retrieved 27 September 2016.
- ^ a b c d e f g h i j @GalacticTick (22 March 2020). "The next Galactic Tick Day is December 15, 2021!" (Tweet). Retrieved 9 September 2023 – via Twitter.
External links edit
| External videos | |
|---|---|
 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