Viikon numerot vuonna 2173
- #MondaySunday
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- 4 January 25 January 31
- 5 February 1 February 7
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- 7 February 15 February 21
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- 9 March 1 March 7
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- 17 April 26 May 2
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- 26 June 28 July 4
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- 30 July 26 August 1
- 31 August 2 August 8
- 32 August 9 August 15
- 33 August 16 August 22
- 34 August 23 August 29
- 35 August 30 September 5
- 36 September 6 September 12
- 37 September 13 September 19
- 38 September 20 September 26
- 39 September 27 October 3
- 40 October 4 October 10
- 41 October 11 October 17
- 42 October 18 October 24
- 43 October 25 October 31
- 44 November 1 November 7
- 45 November 8 November 14
- 46 November 15 November 21
- 47 November 22 November 28
- 48 November 29 December 5
- 49 December 6 December 12
- 50 December 13 December 19
- 51 December 20 December 26
- 52 December 27 January 2, 2174