View source for Template:New year header

{{#ifexpr:{{{2|{{CURRENTDAY}}}}}=31 and {{{3|{{#time:Gi}}}}}<1000|{{#ifeq:{{{1|}}}|new|the upcoming year|the current year}}|
{{#ifexpr:{{{2|{{CURRENTDAY}}}}}=1 and {{{3|{{#time:Gi}}}}}>=1200|{{#ifeq:{{{1|}}}|new|the current year|the previous year}}|the current year in parts of the world where the time zone is {{#ifeq:{{{1|}}}|old|earlier than}} <!--
-->{{#ifexpr:{{{2|{{CURRENTDAY}}}}}=1|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1100|[[UTC−11:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1000|[[UTC−10:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=930|[[UTC−09:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=900|[[UTC−09:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=800|[[UTC−08:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=700|[[UTC−07:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=600|[[UTC−06:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=500|[[UTC−05:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=400|[[UTC−04:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=330|[[UTC−03:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=300|[[UTC−03:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=200|[[UTC−02:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=100|[[UTC−01:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=0|[[UTC±00:00]]|
}}}}}}}}}}}}}}}}}}}}}}}}}}}}
}}<!--
-->{{#ifexpr:{{{2|{{CURRENTDAY}}}}}=31|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=2300|[[UTC+01:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=2200|[[UTC+02:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=2100|[[UTC+03:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=2030|[[UTC+03:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=2000|[[UTC+04:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1930|[[UTC+04:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1900|[[UTC+05:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1830|[[UTC+05:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1815|[[UTC+05:45]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1800|[[UTC+06:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1730|[[UTC+06:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1700|[[UTC+07:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1600|[[UTC+08:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1515|[[UTC+08:45]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1500|[[UTC+09:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1430|[[UTC+09:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1400|[[UTC+10:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1330|[[UTC+10:30]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1300|[[UTC+11:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1200|[[UTC+12:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1100|[[UTC+13:00]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1015|[[UTC+13:45]]|
{{#ifexpr:{{{3|{{#time:Gi}}}}}>=1000|[[UTC+14:00]]
}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
}}{{#ifeq:{{{1|}}}|new|{{sp}}or later}}}}}}<noinclude>

{{Documentation|content=
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This template is used every New Year's Day on the articles for the involved years while the year is changing over. The year changes at different times in different time zones, and this template automates the updates to keep the articles current hour-to-hour.

It works by calculating the time zone in which it was most recently midnight of a new year, and displaying appropriate text for the first sentence of the appropriate year article.  This template gives accurate results between 0:00, December 31 UTC and 23:59, January 1 UTC; at other times the standard template should be used.

Usage: <code><nowiki>'''2018''' is {{New year header|new}}.  It is {{Year article header/zc|2018}}.</nowiki></code>

Use "new" for the incoming year and "old" for the outgoing year.  For testing, an optional second and third argument can provide a day of the month (31 or 1) and a time in hhmm format, no colon.

See also:
* [[Template:New decade header]]
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[[Category:Templates using TemplateData]]
[[Category:Time and date maintenance templates]]
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