ISO week reference
Week 42 2025: October 13–19, 2025
Exact Monday-to-Sunday dates for 2025-W42. Use this week as a calendar reference, open it in the planner, or view it in the full 2025 ISO calendar.
Week42
ISO year2025
Weekdays5
QuarterQ4
ISO reference2025-W42
Starts
Ends
Length7 days
Exact dates
Dates in week 42
ISO weeks run Monday through Sunday.
MonOct 132025
TueOct 142025
WedOct 152025
ThuOct 162025
FriOct 172025
SatOct 182025
SunOct 192025
Use this week
Open Week 42 Planner
Turn these dates into a plan
Open a private weekly planner already set to October 13–19, 2025, then add priorities, deadlines, meetings and hourly work blocks.