Week 42 1686: October 14–20, 1686
Week 42 starts on Monday, October 14, 1686 and ends on Sunday, October 20, 1686.
Quick answer
Week 42 of 1686 is the seven-day ISO week from October 14, 1686 to October 20, 1686. ISO weeks always run from Monday to Sunday.
Check the current work week
Need today’s week instead? Open the current work week dashboard for the live ISO week number, Monday-to-Sunday range, business days left and Friday planning date.
Use week 42 in professional planning
This permanent week reference can be used in project plans, payroll notes, weekly reports, production schedules and deadline documents. Share the week number together with the ISO year and exact date range to avoid ambiguity around New Year.
For calculations that span more than one week, use the weeks between dates calculator. For work schedules, compare the same range with the business days calculator or open the project timeline calculator.
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FAQ
What are the dates for week 42 of 1686?
The dates are October 14, 1686 through October 20, 1686.
What day does this week start?
It starts on Monday.
What day does this week end?
It ends on Sunday.
How should I write this week in a report?
Use “ISO week 42 of 1686 (Oct 14–Oct 20, 1686)” so the week-year and date range are both clear.