Difference between revisions of "1335: Now"
|Line 2:||Line 2:|
| number = 1335
| number = 1335
| before = ''Explainxkcd note: The image below is
| before = ''Explainxkcd note: The image below is a . The actual comic per day. <br/>For the current state, see [http://xkcd.com/now/ http://xkcd.com/now]''
| date = February 26, 2014
| date = February 26, 2014
| title = Now
| title = Now
Revision as of 15:08, 27 February 2014
| This explanation may be incomplete or incorrect: Too many guesses, too many parentheses, maybe more. The time zones need an explain.|
If you can address this issue, please edit the page! Thanks.
The picture rotates by 3.75 degrees every 15 minutes (so far, and presumably forever), as does the Earth, so that it is constantly up to date in showing which regions are currently at which times of day. The picture change seems to happen half-way through a 15-minute time increment (that is, at 7½, 22½, 37½, and 52½ minutes after each hour), so that the picture is always correct for the nearest multiple of 15 minutes.
The map projection of the earth in the middle of the picture shows an azimuthal equidistant projection with the South Pole in the center which is uncommon because most times this projection has the North Pole at its center. Randall was playing on projections before here: 977: Map Projections .
The list of cities and countries doesn't always match the map, because the list takes into account local variations in time zones. The map shows the current (February 2014) configuration of time zones with respect to daylight saving time (also known as summer time), which is being observed at the time of the comic's initial release in parts of Australia, New Zealand, Brazil, and other countries not named in this comic. If the map is to stay accurate through the year, the location of place names will have to move over the next few months as parts of the southern hemisphere go off DST and parts of the northern hemisphere go onto it, but we don't yet know whether this will happen.
In many countries, business hours are considered to be from 9am to 5pm. With some exceptions, including emergencies, it is generally considered rude to place a telephone call to someone's residence during the hours when most people are asleep (Randall portrays this time period as extending from 10pm to 8am). This may be a reference to the 10pm "cutoff" time discussed in an episode of "Curb Your Enthusiasm."
On midnight at UTC we can see this situation:
- 00:00 UTC Greenwich Mean Time
- UK, Portugal
- West Africa
- 01:00 UTC Central European Time
- Most of central Europe
- Nigeria, and many more countries belonging to the West Africa Time zone
- 02:00 UTC Eastern European Time
- Eastern Europe, many countries like Bulgaria, Romania or Greece
- The Levant (Cyprus, Lebanon, Syria, Palestine, Jordan, Israel, and a part of southern Turkey)
- 03:00 UTC UTC+03:00 (East Africa Time, Eastern Europe Forward Time, and Arabia Standard Time)
- Ethiopia, Kenya, Madagascar, Somalia, and more
- Kaliningrad and Belarus
- Iraq, Kuwait, Saudi Arabia, and more.
- Iran is at Iran Standard Time, using an offset of UTC+03:30
- 04:00 UTC UTC+04:00
- 05:00 UTC UTC+05:00
- 06:00 UTC UTC+06:00
- 07:00 UTC UTC+07:00
- South-east Asia like Cambodia, Indonesia, Thailand, Vietnam, and more
- Christmas Island belonging to Australia
- Russia is also using the Omsk Time
- 08:00 UTC UTC+08:00
- Western Australia
- China uses only one time zone while the country spans about five.
- 09:00 UTC UTC+09:00
- The Koreas
- 10:00 UTC UTC+10:00
- Brisbane and the Australian Capital Territory, New South Wales, Queensland, Tasmania and Victoria
- US: Guam and Northern Mariana Islands
- 11:00 UTC UTC+11:00
- Micronesia, New Caledonia, Solomon Islands, Vanuatu
- Russia Vladivostok Time
- Kamchatka (a Russian peninsula at the east Siberia), Kiribati, Marshall Islands, Nauru, Tuvalu, Tuvalu, and more
- New Zealand, Kiribati, Tonga, Hawaii
- Hawaii, Samoa
- Alaska, French Polynesia, Cook Islands, and more
- Line Islands, belonging to Kiribati
- 15:00 UTC UTC−09:00
- Alaska and French Polynesia
- 16:00 UTC Pacific Time Zone
- US West Coast
- Canada (British Columbia and Yukon)
- Mexico (Baja California)
- 17:00 UTC Mountain Time Zone
- US: Denver, and much more
- Canada: Alberta, British Columbia, more
- 18:00 UTC Central Time Zone
- Mexico, Chile, Ecuador, Nicaragua and more
- US: Chicago, Texas except of some most westernmost counties, and many more
- 19:00 UTC Eastern Time Zone
- Eastern Canada like Ontario or Quebec
- US East Coast including New York and Florida.
- But also Cuba, Haiti, Panama and much more countries
- Canadian Maritimes like New Brunswick, Newfoundland and Labrador, Quebec or Nova Scotia
- Most of the Caribbean Islands.
- 21:00 UTC UTC−03:00
- Coastal Brazil, Argentina, Uruguay, French Guiana, the UK Falkland Islands, and more
- 22:00 UTC UTC−02:00
- UK: South Georgia and the South Sandwich Islands
- Brazil: Fernando de Noronha
- 23:00 UTC UTC−01:00
- Cape Verde
- Portugal: Azores
When first posted, the picture was exactly 12 hours off. Somewhere around 5:10 UTC, this was fixed. The original version also included a listing for Inland Brazil; this could have created a conflict with US East Coast when Daylight-Saving Time begins in the US, and it has been removed.
The names used for the image files refer not to UTC (Universal Time) as one might expect but rather to the time exactly 12 hours off of that. The name of the image file linked from the page matched Universal Time during the first few hours, but the file-naming scheme did not change when the comic was corrected.
|This transcript is incomplete. Please help editing it! Thanks.|
[The comic is a moving circle with a static outer ring. The fist two columns in the table below should show this static ring. The outermost part of the static ring is divided in 22 segments representing the 24 hours of the day. Noon and Midnight actually mean 11-13 and 23-1. This is represented in the first column. The innermost part of the static ring contains descriptions of the time intervals (such as "business hours"), and is described in the second column. The rest of the columns describe the moving circle. On the outermost ring of this moving circle are written names of the regions of the Earth . On the second ring, counting from out to in, are the names of the continents. Finally, on the innermost part of the circle is the Earth as seen from the south pole.]
|First static circle||Second static circle||First moving circle||Second moving circle||Third moving circle||Fourth moving circle|
|Noon||Business hours (9-5)||UK||West Africa|
|Most of Europe||Nigeria|
|Eastern Europe||The Levant||Egypt|
|Rude to call||Most Australian cities|
|US West Coast|
|Eastern Canada||US East Coast|
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