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{{episodes|4B|12|4|22 Feb to 1 Mar 1975|The Ark in Space|Genesis of the Daleks|}}

This story aired in the following '''known''' countries. They are listed in chronological order according to known airdate. If no month is noted, the actual airdate is not confirmed, and is a close approximate. (Refer also to [[Selling Doctor Who]] for expanded airdates.)
[[File:TimeLife4B.jpg|thumb|right|500px|Time Life promo card]]
{| {{small-table}}
|-
|[[Netherlands]]||Aug 75||PAL
|-
|[[Australia]]||May 76||PAL
|-
|[[United Arab Emirates]]|| 76?||PAL
|-
|[[Hong Kong]]||Dec 76||PAL
|-
|[[New Zealand]]||Mar 78||PAL
|-
|[[United States]]*||Sep 78||NTSC
|-
|[[Canada]]||Oct 78||NTSC
|-
|[[Gibraltar]]||Nov 78||PAL
|-
|[[Brunei]]||Dec 78||PAL
|-
|[[Nigeria]]||Feb 79||PAL
|-
|[[Swaziland]]||Mar 79||PAL
|-
|[[Mexico]]||May 79||NTSC
|-
|[[Chile]]||Jun 79||NTSC
|-
|[[Malta]]||Sep 79||PAL
|-
|[[Puerto Rico]]||Nov 79?||NTSC
|-
|[[Colombia]]||Feb 80||NTSC
|-
|[[Italy]]||Feb 80||PAL
|-
|[[Costa Rica]]||Feb 80||NTSC
|-
|[[Ecuador]]||Apr 80||NTSC
|-
|[[Nicaragua]]||Aug 80||NTSC
|-
|[[Brazil]]||80?||PAL
|-
|[[Jordan]]||May 81?||PAL
|-
|[[Venezuela]]||81||NTSC
|-
|[[Bahrain]]||Jan 82||PAL
|-
|[[Honduras]]?||?||NTSC
|-
|}

*(*) ''The US date is based on the airdates for [[WTEV]], which was the '''first''' US station to screen the initial package of 98 Tom Baker episodes.''
**[http://homepages.vodafone.co.nz/~jpreddle/HdaSilva.wav Howard da Silva narrations medley (Audio Only)]
* This story was dubbed into [[Spanish]], [[Arabic]], Italian, French and Galician. 
* This story was often shown after [[Robot]] and before [[The Ark in Space]], the stories being screened in production code order.


==Reissue==
* The story was reissued in the mid-1980s, during the THIRD WAVE of sales.

{| {{small-table}}
|-
|[[Monaco]]||Nov 83||PAL
|-
|[[Sri Lanka]]||Jun 84?||PAL
|-
|[[Saudi Arabia]]||mid-85||NTSC
|-
|[[Armed Forces Network]]||Mar 86||NTSC
|-
|[[Bahamas]]||Jul 86||NTSC
|-
|[[Spain]]||Feb 88||PAL
|-
|[[Turkey]]||Jul 88||PAL
|-
|[[France]]||Apr 89?||SECAM
|-
|[[Japan]]||Jun 93||NTSC
|-
|[[Poland]]||03||PAL?
|-
|}


{{TV Guide blurbs
| part=part 
| title=
| ep1=Harry and Sarah walk into a trap on uninhabited planet Earth.
| ep2=Styre challenges Dr. Who to a duel.
| ep3=
| ep4=
| ep5=
| ep6=
| ep7=
| comp1 =
| comp2 =
}} 
==Links==
*[[Main Page]]
*[[Broadcasts around the World]]
*[[Articles & Analysis]]
*[[BBC Records]]
*[[Doctors]]
**[[Tom Baker stories]]
*[[Spanish]]
*[[Arabic]]