What Month Is It?
Current month, days in month, calendar, and monthly info
Calendar for April 2026
Birth Stone
Diamond
Zodiac Signs
Aries / Taurus (Apr 20–May 20)
Season (Northern Hemisphere)
Spring
Understanding Months, Calendars, and Seasonal Cycles
When someone asks "what month is it?" they might be looking for the month name, the month number (1–12), or the number of days in the current month. Our tool answers all of these at a glance and updates in real time based on your device's timezone. But beyond the immediate answer, understanding how months work—their history, their varying lengths, their names, and their seasonal associations—provides valuable context for date calculations, planning, and general knowledge.
Days in Each Month Reference Table
The Gregorian calendar's 12 months have an irregular pattern of 28–31 days. This irregularity stems from ancient Roman calendar traditions and has persisted for over two millennia. The table below shows each month's number, name, days, and origin.
| # | Month | Days | Name Origin | Season (N. Hemisphere) |
|---|---|---|---|---|
| 1 | January | 31 | Janus, god of beginnings | Winter |
| 2 | February | 28/29 | Februa, purification festival | Winter |
| 3 | March | 31 | Mars, god of war | Spring |
| 4 | April | 30 | Aperire (to open) or Aphrodite | Spring |
| 5 | May | 31 | Maia, goddess of growth | Spring |
| 6 | June | 30 | Juno, goddess of marriage | Summer |
| 7 | July | 31 | Julius Caesar | Summer |
| 8 | August | 31 | Augustus Caesar | Summer |
| 9 | September | 30 | Septem (Latin for seven) | Fall |
| 10 | October | 31 | Octo (Latin for eight) | Fall |
| 11 | November | 30 | Novem (Latin for nine) | Fall |
| 12 | December | 31 | Decem (Latin for ten) | Winter |
A Brief History of the Calendar
The calendar we use today has evolved over thousands of years. The earliest Roman calendar, attributed to Romulus (c. 753 BCE), had only 10 months beginning with March and totaling 304 days. The period between December and March was simply an unnamed winter gap. King Numa Pompilius (c. 713 BCE) added January and February, bringing the calendar to 355 days—still short of the 365.25-day solar year.
In 45 BCE, Julius Caesar introduced the Julian calendar based on the Egyptian solar calendar. It established the 365-day year with a leap year every four years, closely matching the actual solar year of 365.2422 days. This small discrepancy—about 11 minutes per year—accumulated to a 10-day drift by the 16th century, causing the spring equinox to fall earlier and earlier on the calendar.
In 1582, Pope Gregory XIII introduced the Gregorian calendar to correct this drift. The reform skipped 10 days (October 4, 1582 was followed by October 15, 1582) and refined the leap year rule: century years (1700, 1800, 1900) are not leap years unless divisible by 400 (so 2000 was a leap year). This correction brings the average calendar year to 365.2425 days—accurate to within 26 seconds of the true solar year.
Month Numbering in Programming and Data
In most programming languages, months are represented numerically. However, numbering conventions vary. The ISO 8601 standard and most human-facing systems use 1–12 (January = 1, December = 12). JavaScript's Date.getMonth(), however, returns 0–11 (January = 0, December = 11), which is a frequent source of bugs for developers. Python's datetime module uses 1–12. SQL databases typically store months as 1–12. Being aware of these differences prevents off-by-one errors in date processing.
Month Name Origins in Detail
The names of our months preserve a fascinating record of Roman religion, politics, and numbering. January honors Janus, the two-faced god who looks both backward and forward—fitting for the first month of the year. February comes from Februa, a Roman purification festival held in mid-month. March was originally the first month and named after Mars, the god of war, because it marked the beginning of the military campaign season. April may derive from the Latin aperire ("to open"), referring to the opening of buds and flowers in spring, or from Aphrodite, the Greek goddess of love.
May and June honor Maia (goddess of growth and fertility) and Juno (goddess of marriage), respectively. July was renamed from Quintilis to honor Julius Caesar after his assassination in 44 BCE, and August was renamed from Sextilis to honor Emperor Augustus in 8 BCE. Augustus reportedly added a day to his month (taking it from February) so it would have 31 days, matching July. September through December retain their original Latin numerical prefixes—septem (7), octo (8), novem (9), decem (10)—reflecting their positions in the old 10-month Roman calendar before January and February were added.
Seasonal Associations
In the Northern Hemisphere, months map to seasons as follows: Winter spans December through February, with the winter solstice (shortest day) around December 21. Spring runs March through May, beginning near the vernal equinox around March 20. Summer covers June through August, starting near the summer solstice around June 21. Fall (Autumn) includes September through November, beginning near the autumnal equinox around September 22. The Southern Hemisphere reverses these associations—July is mid-winter, January is mid-summer.
These seasonal associations affect everything from school calendars and holiday planning to agriculture and retail cycles. Retailers plan inventory around seasonal demand (winter coats, summer clothing), while accountants use calendar quarters (Jan–Mar, Apr–Jun, Jul–Sep, Oct–Dec) aligned with these seasonal periods for financial reporting.
Our "What Month Is It?" tool is free and runs entirely in your browser. For related tools, try our Today's Date, Calendar, Month Calculator, or Days Left in Year.