1670/1671

For 1670/1671 the key weeks and dates were:

Week 1: 20 December to 27 December 1670

New Year 1671, Week 2: 27 December to 3 January 1671

Legal New Year, Week 14: 21 March to 28 March 1671

Week 52: 12 December to 19 December 1671

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