1674/1675
For 1674/1675 the key weeks and dates were:
Week 1: 16 December to 23 December 1674
New Year 1675, Week 3: 30 December to 6 January 1675
Legal New Year, Week 15: 23 March to 30 March 1675
Week 52: 7 December to 14 December 1675
The dates on Week 52 are illegible and determined through Week 1675 51 and Week 1675 1.