Space

Space

See Physics#Cosmology, Mapping

to merge with Physics?

• https://en.wikipedia.org/wiki/Cosmology
• https://en.wikipedia.org/wiki/Astronomy

• https://en.wikipedia.org/wiki/Barycentric_coordinates_(astronomy)

• http://kokogiak.com/solarsystembodies.jpg

• http://howmanypeopleareinspacerightnow.com/

• http://spaceprob.es/ [1]

• http://nasa.gov/
  • http://spotthestation.nasa.gov/

• http://www.esa.int/ESA

• http://www.spacetelescope.org/

• http://www.spaceflightnow.com/
  • http://www.livestream.com/spaceflightnow

• http://www.nasawatch.com/

• https://en.wikipedia.org/wiki/Somnium_(novel)

• http://www.spacetelescope.org/

• http://www.ustream.tv/channel/iss-hdev-payload [2]
  • http://eol.jsc.nasa.gov/HDEV

• http://www.exosolar.net/

• http://www.asterank.com/

• http://www.urthecast.com/

Stars Not Where They Seemed or Were Calculated to be, but Nobody Need Worry.

• http://www.nature.com/news/stephen-hawking-there-are-no-black-holes-1.14583 [3]

• http://www.newscientist.com/article/dn25235-first-glimpse-of-big-bang-ripples-from-universes-birth.html?

Earth

• http://hpiers.obspm.fr/

• http://www.swpc.noaa.gov/ovation/North_New.html

• http://news.sciencemag.org/earth/2015/03/mysterious-snow-carrots-observed-meteorite-impact-sites

• http://apps.agi.com/SatelliteViewer/ [4]

• SATFLARE - In this page you can track in real time all the satellites orbiting the Earth, with both 2D and 3D interactive representations, predict their passes, view their trajectory among stars on an interactive sky chart, predict satellite flares and transits (across the Sun and the Moon), find out the best location to see these events on a detailed Google map. You can also follow satellite re-entries and other special events, join the observer community, post messages and share your comments and observations. Currently in our database we have more than 9000 observation reports!

Moon

• http://www.almanac.com/content/when-will-moon-rise-today

• https://medium.com/starts-with-a-bang/the-inconstant-moon-6df463a3b5f5

Mars

• https://i.imgur.com/VZvj5S7.jpg
• https://i.imgur.com/VbKV9DF.jpg

Software

• http://www.stellarium.org/

Time

See also Organising#Time management

• https://xkcd.com/1335/
  • https://news.ycombinator.com/item?id=7384025

• http://www.vendian.org/envelope/TemporaryURL/time.html

Time zones

• http://www.iana.org/time-zones

• http://everytimezone.com/

Calendar

• http://www.timeanddate.com/calendar/?country=9

For accounting: a 5 week month = 5 weeks including a Monday

• http://www.moonstick.com/moonstick.htm [5]

• http://99percentinvisible.org/episode/the-calendar/
  • https://www.reddit.com/r/DIY/comments/3cholo/my_girlfriend_and_i_made_a_pretty_unconventional/

• http://qntm.org/calendar [6]

Clocks

• http://www.theguardian.com/science/2015/apr/19/clockmaker-john-harrison-vindicated-250-years-absurd-claims

• https://en.wikipedia.org/wiki/WWVB

• http://www.anishathalye.com/2016/12/26/micro-wwvb/ [7]

• http://www.prc68.com/I/timefreq.shtml

• http://www.limmy.com/deedeespeakingclock/

to sort

• http://www.waitbutwhy.com/2013/08/putting-time-in-perspective.html

1h = 3600s 1d = 86400s 1w = 604800s 28d = 2419200s

• http://rsnous.com/posts/2014-08-07-pinhole-a-falling-ball-demo.html

• time cheatsheet

http://jtnimoy.net/workviewer.php?q=178

• http://www.whatsthetimethere.netai.net/msm/

• http://www.fourmilab.ch/documents/calendar/

• http://ilyabirman.net/projects/forebruary/

• https://snipt.net/dogstarchampion/metric-time-indicator-for-ubuntu-unity/

• http://poisson.phc.unipi.it/~maggiolo/index.php/2014/01/how-much-is-time-wrong-around-the-world/

• https://en.wikipedia.org/wiki/Runic_calendar

• http://pagancalendar.co.uk/

• http://skreksto.re/products/durr

• http://www.iers.org/nn_10398/IERS/EN/Science/EarthRotation/UT1-TAI.html?__nnn=true

• https://en.wikipedia.org/wiki/Decimal_time
• https://en.wikipedia.org/wiki/Swatch_Internet_Time [8]

• http://www.visualnews.com/2014/03/17/artist-spent-month-creating-digital-sundial-says-dont-throw-watch/

• https://news.ycombinator.com/item?id=11094274

• https://news.ycombinator.com/item?id=7965317

• http://www.moongiant.com/

• http://procyonic.org/clocks/ [9]

• http://www.famsi.org/research/vanstone/2012/index.html

• http://www.hexahedria.com/experiments/qrclock/index.html

• https://news.ycombinator.com/item?id=12617263
• https://news.ycombinator.com/item?id=12540941

Unix epoch

while true; do echo "$(date +%s)" | figlet ; sleep 0.99 ; done

• http://www.epochconverter.com/epoch/clock.php

date -u -d @1400000000
  gives datetime in UTC

NTP

• https://news.ycombinator.com/item?id=13650665

Linux

• http://man7.org/linux/man-pages/man3/strftime.3.html - time format/template