Time

General

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

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

Clocks

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

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/

• WP: 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

• WP: Decimal_time
• WP: Swatch_Internet_Time [1]

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

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

• http://www.moongiant.com/

• http://procyonic.org/clocks/ [2]

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

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

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