Template:Countdown

{{#ifeq:{{#expr: {{#time:U}} < {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}}}}|1|There are {{#ifeq:{{#expr: {{#time:U}} < {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - 86399}}|1|{{#expr:( ( ( {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - {{#time:U}}) / 86400 ) -0.5) round 0}}  days|}} {{#ifeq:{{#expr: {{#time:U}} > {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - 3600}}|1|{{#ifeq: {{#expr: ( ( ( {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - {{#time:U}} ) / 60 ) - 0.5 ) round 0 }}|0|{{#expr: {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - {{#time:U}}}}  seconds |{{#expr: ( ( ( {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - {{#time:U}} ) / 60 ) - 0.5 ) round 0 }}  minutes}} |{{#expr:{{#expr: ( {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - {{#time:U}} ) / 3600 - ( ( ( ( ( ( {{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} - {{#time:U}}) / 86400 ) - 0.5 ) round 0 )* 24 ) -0.5 ) round 0}} - 1}}  hours}} left until {{{event|the event}}}.|{{#if:{{{duration|}}}|{{#ifeq:{{#expr: ({{#if:{{{timecode|}}}|{{{timecode|}}}|{{#time:U|{{{year}}}-{{{month|1}}}-{{{day|1}}} {{{hour|00}}}:{{{minute|00}}}:{{{second|00}}}}}}} + {{{duration}}}) > {{#time:U}}}}|1|{{{eventstart|{{{event|the event}}} has already started.}}}|{{{eventend|{{{event|the event.}} has already ended}}}}}|{{{eventend|{{{event|the event}}} has already ended.}}}}}}}

Template from Wikipedia.