Weeknummer
18
April 30 – May 6, 1990
Er zijn 52 weken in het jaar 1990
| # | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 16 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 17 | 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 18 | 30 | 1 | 2 | 3 | 4 | 5 | 6 |
| 19 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 20 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
- Standaard:
- Internationale
- Amerikaanse
- Islamitische
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Weeknummers in het jaar 1990
- #MondaySunday
- 1 January 1 January 7
- 2 January 8 January 14
- 3 January 15 January 21
- 4 January 22 January 28
- 5 January 29 February 4
- 6 February 5 February 11
- 7 February 12 February 18
- 8 February 19 February 25
- 9 February 26 March 4
- 10 March 5 March 11
- 11 March 12 March 18
- 12 March 19 March 25
- 13 March 26 April 1
- 14 April 2 April 8
- 15 April 9 April 15
- 16 April 16 April 22
- 17 April 23 April 29
- 18 April 30 May 6
- 19 May 7 May 13
- 20 May 14 May 20
- 21 May 21 May 27
- 22 May 28 June 3
- 23 June 4 June 10
- 24 June 11 June 17
- 25 June 18 June 24
- 26 June 25 July 1
- 27 July 2 July 8
- 28 July 9 July 15
- 29 July 16 July 22
- 30 July 23 July 29
- 31 July 30 August 5
- 32 August 6 August 12
- 33 August 13 August 19
- 34 August 20 August 26
- 35 August 27 September 2
- 36 September 3 September 9
- 37 September 10 September 16
- 38 September 17 September 23
- 39 September 24 September 30
- 40 October 1 October 7
- 41 October 8 October 14
- 42 October 15 October 21
- 43 October 22 October 28
- 44 October 29 November 4
- 45 November 5 November 11
- 46 November 12 November 18
- 47 November 19 November 25
- 48 November 26 December 2
- 49 December 3 December 9
- 50 December 10 December 16
- 51 December 17 December 23
- 52 December 24 December 30