# 2027 ISO week numbers and dates

Page: https://worldtimeportal.com/2027

Standard: ISO 8601. Weeks run Monday through Sunday, inclusive. Week 1 contains the first Thursday. ISO week-year can differ from calendar year near January 1 and December 31.

2027 has 52 ISO weeks. The table includes every complete week intersecting the calendar year, including boundary dates in neighboring years. Dates are Gregorian calendar dates (YYYY-MM-DD), independent of time zone.

| ISO week-year | ISO week number | From Monday | Through Sunday |
|---|---|---|---|
| 2026 | 53 | 2026-12-28 | 2027-01-03 |
| 2027 | 1 | 2027-01-04 | 2027-01-10 |
| 2027 | 2 | 2027-01-11 | 2027-01-17 |
| 2027 | 3 | 2027-01-18 | 2027-01-24 |
| 2027 | 4 | 2027-01-25 | 2027-01-31 |
| 2027 | 5 | 2027-02-01 | 2027-02-07 |
| 2027 | 6 | 2027-02-08 | 2027-02-14 |
| 2027 | 7 | 2027-02-15 | 2027-02-21 |
| 2027 | 8 | 2027-02-22 | 2027-02-28 |
| 2027 | 9 | 2027-03-01 | 2027-03-07 |
| 2027 | 10 | 2027-03-08 | 2027-03-14 |
| 2027 | 11 | 2027-03-15 | 2027-03-21 |
| 2027 | 12 | 2027-03-22 | 2027-03-28 |
| 2027 | 13 | 2027-03-29 | 2027-04-04 |
| 2027 | 14 | 2027-04-05 | 2027-04-11 |
| 2027 | 15 | 2027-04-12 | 2027-04-18 |
| 2027 | 16 | 2027-04-19 | 2027-04-25 |
| 2027 | 17 | 2027-04-26 | 2027-05-02 |
| 2027 | 18 | 2027-05-03 | 2027-05-09 |
| 2027 | 19 | 2027-05-10 | 2027-05-16 |
| 2027 | 20 | 2027-05-17 | 2027-05-23 |
| 2027 | 21 | 2027-05-24 | 2027-05-30 |
| 2027 | 22 | 2027-05-31 | 2027-06-06 |
| 2027 | 23 | 2027-06-07 | 2027-06-13 |
| 2027 | 24 | 2027-06-14 | 2027-06-20 |
| 2027 | 25 | 2027-06-21 | 2027-06-27 |
| 2027 | 26 | 2027-06-28 | 2027-07-04 |
| 2027 | 27 | 2027-07-05 | 2027-07-11 |
| 2027 | 28 | 2027-07-12 | 2027-07-18 |
| 2027 | 29 | 2027-07-19 | 2027-07-25 |
| 2027 | 30 | 2027-07-26 | 2027-08-01 |
| 2027 | 31 | 2027-08-02 | 2027-08-08 |
| 2027 | 32 | 2027-08-09 | 2027-08-15 |
| 2027 | 33 | 2027-08-16 | 2027-08-22 |
| 2027 | 34 | 2027-08-23 | 2027-08-29 |
| 2027 | 35 | 2027-08-30 | 2027-09-05 |
| 2027 | 36 | 2027-09-06 | 2027-09-12 |
| 2027 | 37 | 2027-09-13 | 2027-09-19 |
| 2027 | 38 | 2027-09-20 | 2027-09-26 |
| 2027 | 39 | 2027-09-27 | 2027-10-03 |
| 2027 | 40 | 2027-10-04 | 2027-10-10 |
| 2027 | 41 | 2027-10-11 | 2027-10-17 |
| 2027 | 42 | 2027-10-18 | 2027-10-24 |
| 2027 | 43 | 2027-10-25 | 2027-10-31 |
| 2027 | 44 | 2027-11-01 | 2027-11-07 |
| 2027 | 45 | 2027-11-08 | 2027-11-14 |
| 2027 | 46 | 2027-11-15 | 2027-11-21 |
| 2027 | 47 | 2027-11-22 | 2027-11-28 |
| 2027 | 48 | 2027-11-29 | 2027-12-05 |
| 2027 | 49 | 2027-12-06 | 2027-12-12 |
| 2027 | 50 | 2027-12-13 | 2027-12-19 |
| 2027 | 51 | 2027-12-20 | 2027-12-26 |
| 2027 | 52 | 2027-12-27 | 2028-01-02 |