Week 18 in 1979

WEEK
18

This week starts on Sunday, April 29, 1979 and ends on Saturday, May 5, 1979.

WEEK EUROPE & ISO
18

This week starts on Monday, April 30, 1979 and ends on Sunday, May 6, 1979.

Week 18 of 1979 begins on April 30, 1979 and ends on May 6, 1979. It covers days 120 to 126 of the year and falls in quarter 2.

Weeks since this week: 2475

Week 18 of 1979 at a glance

Starts (Monday)April 30, 1979
Ends (Sunday)May 6, 1979
US week (Sunday to Saturday)18 (April 29, 1979)
MonthApril / May
QuarterQ2
Days of the year120–126
Year completed at the end of this week34.5%
Weeks left in 1979 after this week34
Weeks in 197952
Even or odd weekEven

Calendar for April 1979

April 1979
SuMoTuWeThFrSa
Week 141234567
Week 15891011121314
Week 1615161718192021
Week 1722232425262728
Week 182930
USA Calendar

All Weeks in 1979:

Past & Future Week Number 18:

US and ISO week numbers

In the US system, where weeks start on Sunday and week 1 is the week that contains 1 January, this is week 18 of 1979. It runs from April 29, 1979 to May 5, 1979.

Even and odd weeks

Week 18 is an even week. Even and odd week numbers are used for alternating schedules such as shift rotas, school timetables, custody arrangements and waste collection.

Week 18 in other years

FromTo
Week 18 in 1977May 2, 1977May 8, 1977
Week 18 in 1978May 1, 1978May 7, 1978
Week 18 in 1980April 28, 1980May 4, 1980
Week 18 in 1981April 27, 1981May 3, 1981

How week numbers are counted

Most of the world numbers weeks according to the ISO 8601 standard. A week starts on Monday, and week 1 is the week that contains the first Thursday of the year, which is always the week that contains 4 January.

Week 1 of 1979 began on January 1, 1979. 1979 has 52 ISO weeks.

Because of this rule, the first days of January can belong to the last week of the previous year, and the last days of December can belong to week 1 of the next year.

In the United States, weeks usually start on Sunday and week 1 is the week that contains 1 January, so the US week number can differ from the ISO week number.

Find the week number of a date

Frequently Asked Questions (FAQ)

When does week 18 of 1979 start and end?

Week 18 of 1979 starts on April 30, 1979 and ends on May 6, 1979 (ISO 8601, Monday to Sunday).

Which month is week 18 of 1979 in?

Week 18 of 1979 starts in April and ends in May.

What dates are in week 18 of 1979?

April 30, 1979, May 1, 1979, May 2, 1979, May 3, 1979, May 4, 1979, May 5, 1979, and May 6, 1979

How many weeks does 1979 have?

1979 has 52 ISO weeks.

Is week 18 an even or odd week?

Week 18 is an even week.

What is the US week number for this week?

In the US system, where weeks start on Sunday and week 1 is the week that contains 1 January, this is week 18 of 1979. It runs from April 29, 1979 to May 5, 1979.