ISO week details

Week 27 1861: July 1–7, 1861

Week 27 starts on Monday, July 1, 1861 and ends on Sunday, July 7, 1861.

Week27
ISO year1861
StartJul 1
EndJul 7

Quick answer

Week 27 of 1861 is the seven-day ISO week from July 1, 1861 to July 7, 1861. ISO weeks always run from Monday to Sunday.

Use week 27 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.

FAQ

What are the dates for week 27 of 1861?

The dates are July 1, 1861 through July 7, 1861.

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 27 of 1861 (Jul 1–Jul 7, 1861)” so the week-year and date range are both clear.