Week 15 in 1999

WEEK
16

This week starts on Sunday, April 11, 1999 and ends on Saturday, April 17, 1999.

WEEK EUROPE & ISO
15

This week starts on Monday, April 12, 1999 and ends on Sunday, April 18, 1999.

Week 15 of 1999 begins on April 12, 1999 and ends on April 18, 1999. It covers days 102 to 108 of the year and falls in quarter 2.

Weeks since this week: 1433

Week 15 of 1999 at a glance

Starts (Monday)April 12, 1999
Ends (Sunday)April 18, 1999
US week (Sunday to Saturday)16 (April 11, 1999)
MonthApril
QuarterQ2
Days of the year102–108
Year completed at the end of this week29.6%
Weeks left in 1999 after this week37
Weeks in 199952
Even or odd weekOdd

Calendar for April 1999

April 1999
SuMoTuWeThFrSa
Week 13123
Week 1445678910
Week 1511121314151617
Week 1618192021222324
Week 17252627282930
USA Calendar

All Weeks in 1999:

Past & Future Week Number 15:

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 16 of 1999. It runs from April 11, 1999 to April 17, 1999.

Even and odd weeks

Week 15 is an odd week. Even and odd week numbers are used for alternating schedules such as shift rotas, school timetables, custody arrangements and waste collection.

Week 15 in other years

FromTo
Week 15 in 1997April 7, 1997April 13, 1997
Week 15 in 1998April 6, 1998April 12, 1998
Week 15 in 2000April 10, 2000April 16, 2000
Week 15 in 2001April 9, 2001April 15, 2001

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 1999 began on January 4, 1999. 1999 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 15 of 1999 start and end?

Week 15 of 1999 starts on April 12, 1999 and ends on April 18, 1999 (ISO 8601, Monday to Sunday).

Which month is week 15 of 1999 in?

Week 15 of 1999 is in April.

What dates are in week 15 of 1999?

April 12, 1999, April 13, 1999, April 14, 1999, April 15, 1999, April 16, 1999, April 17, 1999, and April 18, 1999

How many weeks does 1999 have?

1999 has 52 ISO weeks.

Is week 15 an even or odd week?

Week 15 is an odd 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 16 of 1999. It runs from April 11, 1999 to April 17, 1999.