GLSCORE
Pattern

Pattern results

Years with the same calendar as 1999

This page groups every year in the archive that shares the same leap-year status and opening weekday as 1999.

Base year 1999
Matching years 21
January 1 weekday Friday

Find a year pattern

Enter another base year.

Base years are available from 1900 through 2100.

Matching year pages

These year pages share the same calendar layout as the base year.

1909 1915 1926 1937 1943 1954 1965 1971 1982 1993 2010 2021 2027 2038 2049 2055 2066 2077 2083 2094 2100

January pages in matching years

January pages are a quick way to verify the same opening weekday and calendar shape.

January 1909 January 1915 January 1926 January 1937 January 1943 January 1954 January 1965 January 1971 January 1982 January 1993 January 2010 January 2021 January 2027 January 2038 January 2049 January 2055 January 2066 January 2077 January 2083 January 2094 January 2100

What this year pattern shows

These facts explain why the matching years share the same overall calendar shape.

Base year
1999
Leap year
No
January 1 weekday
Friday
Matching years
21
First match
1909
Last match
2100

21 years in the archive share the same calendar layout as 1999.

Use this year pattern

These routes help you move from a matching year into the exact calendar context you need.

  • Open a matching year page to compare leap-year status and yearly calendar shape.
  • Use the January links to confirm the same opening weekday quickly.
  • Return to the base year whenever you need the original calendar reference.

Explore related pages

These links connect the pattern back to the main archive entities.

Core archive links

Nearby patterns