Reference months
Reference months
These months cover changing month lengths and a civil-year boundary. The linked project pages are examples for visual reference; the library calculates its results from Gregorian rules rather than reading those pages.
| Month | Days | First weekday |
|---|---|---|
| November 2026 | 30 | Sunday |
| December 2026 | 31 | Tuesday |
| January 2027 | 31 | Friday |
| February 2027 | 28 | Monday |
For every week start, fixed mode has 42 cells. Natural mode has the minimum number of complete rows. Adjacent dates cross from December 2026 into January 2027 using real civil dates.