# The Calendar > Free calendar tools, holiday dates, week numbers, and step-by-step guides for Google Calendar, Outlook, and Apple Calendar. The Calendar is a free reference site covering calendar tools, holiday dates, step-by-step calendar guides, and cultural/religious calendars. Everything is editorial, factual, and runs as a static site — no paywall, no sign-up, no tracking of tool inputs (calculations run client-side in the browser). The site is independently maintained. Public-holiday data is generated from primary sources (e.g., 5 U.S.C. § 6103 for US federal holidays) and re-verified each year. ## Interactive tools - [Free calendar tools](https://the-calendar.net/tools/): Free in-browser calendar tools: week numbers, days between dates, date math, age, and countdowns. - [Week Number Calculator](https://the-calendar.net/tools/week-number/): Find the ISO week number for today or any date. Supports week-of-year lookups and shows the day of the year. - [Days Between Two Dates](https://the-calendar.net/tools/days-between/): Calculate the number of days between two dates, including business days, weeks, and months. - [Date Calculator](https://the-calendar.net/tools/date-calculator/): Add or subtract days, weeks, months, or years from any date. - [Age Calculator](https://the-calendar.net/tools/age-calculator/): Calculate exact age from a date of birth — years, months, days, total weeks, and hours. - [Countdown Timer](https://the-calendar.net/tools/countdown/): Live countdowns to popular dates: Christmas, New Year, Independence Day, Halloween, Thanksgiving, Valentine's Day. ## US holiday calendars - [US Holidays](https://the-calendar.net/holidays/): US federal holidays and monthly observances for 2025–2028. - [US Federal Holidays 2025](https://the-calendar.net/holidays/2025/): Complete list of US federal holidays in 2025 including dates, weekdays, and observed days. - [US Federal Holidays 2026](https://the-calendar.net/holidays/2026/): Complete list of US federal holidays in 2026 including dates, weekdays, and observed days. - [US Federal Holidays 2027](https://the-calendar.net/holidays/2027/): Complete list of US federal holidays in 2027 including dates, weekdays, and observed days. - [US Federal Holidays 2028](https://the-calendar.net/holidays/2028/): Complete list of US federal holidays in 2028 including dates, weekdays, and observed days. - [US Holidays by State](https://the-calendar.net/holidays/by-state/): Federal and state-specific holidays for all 50 US states. - [Public Holidays by Country](https://the-calendar.net/holidays/by-country/): Public holidays in 30 countries across Europe, the Americas, Asia, Africa, and Oceania. ## Calendar app how-to guides - [Calendar How-To Guides](https://the-calendar.net/how-to/): Step-by-step calendar tutorials for Google Calendar, Outlook, and Apple Calendar. - [How to Share a Google Calendar](https://the-calendar.net/how-to/share-google-calendar/): Share a Google Calendar with specific people, an organization, or publicly — with the right permission levels. - [How to Sync Google Calendar with Outlook](https://the-calendar.net/how-to/sync-google-calendar-with-outlook/): Two-way sync your Google Calendar with Microsoft Outlook on desktop, web, or mobile. - [How to Sync Google Calendar with Apple Calendar (iPhone & Mac)](https://the-calendar.net/how-to/sync-google-calendar-with-apple-calendar/): Two-way sync Google Calendar to the native Calendar app on iPhone, iPad, and Mac. - [How to Embed a Google Calendar on a Website](https://the-calendar.net/how-to/embed-google-calendar-website/): Embed a public Google Calendar as an iframe — month, week, or agenda view, with custom colors. - [How to Import an ICS File into Google Calendar](https://the-calendar.net/how-to/import-ics-to-google-calendar/): Bulk-import .ics or .csv calendar files into Google Calendar. - [How to Delete a Google Calendar (or Just Its Events)](https://the-calendar.net/how-to/delete-google-calendar/): Delete an entire Google Calendar or wipe its events while keeping the calendar. - [How to Share an Outlook Calendar](https://the-calendar.net/how-to/outlook-calendar-share/): Share an Outlook calendar with permission levels — within your organization or with external users. - [How to Publish an Outlook Calendar as a Public URL](https://the-calendar.net/how-to/outlook-calendar-publish-url/): Publish an Outlook calendar so anyone with the link can view or subscribe to it. - [How to Add Any Calendar Account to Apple Calendar (iPhone & Mac)](https://the-calendar.net/how-to/apple-calendar-add-account/): Add Google, Outlook, Exchange, Yahoo, or any CalDAV account to the Apple Calendar app. - [What Is an ISO Week Number?](https://the-calendar.net/how-to/what-is-iso-week-number/): ISO 8601 week numbering explained — week 1 rules, the 53-week-year exception, and which countries use it. - [How to Add Holidays to Google Calendar](https://the-calendar.net/how-to/add-holidays-to-google-calendar/): Add country-specific or religious holidays to Google Calendar without manual entry. - [How to Create a Recurring Event in Google Calendar](https://the-calendar.net/how-to/create-recurring-event-google-calendar/): Create daily, weekly, monthly, or custom recurring events — including every-other-Tuesday and last-Friday-of-the-month. - [How to Print Google Calendar (Month, Week, or Agenda)](https://the-calendar.net/how-to/print-google-calendar/): Print Google Calendar as a clean monthly, weekly, or agenda view — color or black-and-white. - [How to Change the Time Zone in Google Calendar](https://the-calendar.net/how-to/google-calendar-time-zone/): Set your primary time zone, display a secondary time zone, and create events in a different time zone. - [How to Sync Google Calendar with iPhone Calendar](https://the-calendar.net/how-to/google-calendar-iphone-sync/): Get Google Calendar events to appear in the native iPhone Calendar app — and stay in sync. - [How to Export Google Calendar to ICS, CSV, or PDF](https://the-calendar.net/how-to/export-google-calendar/): Back up or migrate Google Calendar events as .ics, .csv, or printable PDF. - [How to Add Holidays to Outlook Calendar](https://the-calendar.net/how-to/outlook-add-holidays/): Add US or international holidays to Outlook desktop, web, or mobile. - [How to Print Outlook Calendar (Daily, Weekly, Monthly)](https://the-calendar.net/how-to/outlook-print-calendar/): Print Outlook Calendar in classic, new Outlook, or the web version. - [How to Create a Recurring Event in Outlook](https://the-calendar.net/how-to/outlook-recurring-event/): Set up daily, weekly, monthly, or custom recurring meetings in Outlook. - [How to Share an Apple Calendar from iPhone or Mac](https://the-calendar.net/how-to/apple-calendar-share-iphone/): Share an iCloud calendar with specific people or publicly via a link. - [How to Color-Code Events in Google Calendar](https://the-calendar.net/how-to/google-calendar-color-events/): Set custom colors for individual events and entire calendars in Google Calendar. - [How to Block Time on Google Calendar (Focus Time)](https://the-calendar.net/how-to/block-time-google-calendar/): Block time on your calendar to prevent meetings — using Focus Time, Out of Office, or simple blocked events. - [How to Subscribe to an iCal URL in Google Calendar](https://the-calendar.net/how-to/subscribe-ical-google-calendar/): Add a webcal:// or .ics URL to Google Calendar as a live, auto-updating subscription. - [Google Calendar Tasks vs Reminders](https://the-calendar.net/how-to/google-calendar-tasks/): Tasks and Reminders both live in Google Calendar but behave differently. Here's how to choose. - [How to Hide Weekends in Google Calendar](https://the-calendar.net/how-to/google-calendar-hide-weekends/): Show only Monday–Friday in Google Calendar's week view. - [How to See Your Calendar on Apple Watch](https://the-calendar.net/how-to/apple-watch-calendar/): Get events showing on Apple Watch complications, notifications, and the Calendar app. - [How to Embed an Outlook Calendar on a Website](https://the-calendar.net/how-to/embed-outlook-calendar/): Embed a published Outlook calendar as an iframe or auto-updating widget. ## Cultural and religious calendars - [Cultural Calendars](https://the-calendar.net/cultural/): Lunar, Islamic, Hebrew, Chinese, and zodiac calendars mapped to 2026. ## Sports schedules - [Sports Schedules](https://the-calendar.net/sports/): Editorial guides to NFL, NBA, MLB, NHL, MLS, Premier League, La Liga, Champions League, F1 schedules. - [How to Add the NFL Schedule to Your Calendar (Google, Apple, Outlook)](https://the-calendar.net/sports/nfl-schedule/): Subscribe to the NFL schedule — your team or the whole league — in Google Calendar, Apple Calendar, or Outlook. iCal URLs, bye weeks, time zones, all explained. - [NBA Schedule 2026–27](https://the-calendar.net/sports/nba-schedule/): NBA 2026–27 season key dates: opening night, All-Star Weekend, Play-In Tournament, Playoffs, and Finals. - [MLB Schedule 2027](https://the-calendar.net/sports/mlb-schedule/): MLB 2027 season key dates: Opening Day, All-Star Game, trade deadline, and World Series. - [NHL Schedule 2026–27](https://the-calendar.net/sports/nhl-schedule/): NHL 2026–27 season key dates: opening week, All-Star Game, trade deadline, playoffs, Stanley Cup Final. - [Premier League Fixtures 2026–27](https://the-calendar.net/sports/premier-league-schedule/): English Premier League 2026–27 season key dates: opening weekend, derby weeks, FA Cup overlaps, final matchday. - [La Liga Schedule 2026–27](https://the-calendar.net/sports/la-liga-schedule/): Spanish La Liga 2026–27 season dates: opening weekend, El Clásico, Copa del Rey overlaps, final matchday. - [UEFA Champions League Schedule 2026–27](https://the-calendar.net/sports/champions-league-schedule/): Champions League 2026–27 dates: league phase matchdays, knockout rounds, final. - [F1 2026 Calendar](https://the-calendar.net/sports/f1-2026-calendar/): Complete Formula 1 2026 season calendar — race dates, sprint weekends, and key venues. - [Real Madrid Calendar 2026–27](https://the-calendar.net/sports/real-madrid-calendar/): Real Madrid 2026–27 season schedule overview: La Liga, Copa del Rey, Champions League, Club World Cup, and how to subscribe. - [FC Barcelona Calendar 2026–27](https://the-calendar.net/sports/fc-barcelona-calendar/): FC Barcelona 2026–27 season schedule: La Liga, Copa del Rey, Champions League. Subscription instructions for iCal/Google/Apple. - [Manchester United Calendar 2026–27](https://the-calendar.net/sports/manchester-united-calendar/): Manchester United 2026–27 season schedule: Premier League, FA Cup, EFL Cup, European competition. - [MLS Schedule 2026](https://the-calendar.net/sports/mls-schedule/): Major League Soccer 2026 calendar: opening weekend, All-Star Game, Audi Cup, Playoffs, MLS Cup. ## Financial calendars - [Financial Calendars](https://the-calendar.net/finance/): Economic, earnings, FOMC, tax, and stock market holiday calendars. - [Economic Calendar](https://the-calendar.net/finance/economic-calendar/): What an economic calendar tracks, the most market-moving releases, and where to find a live feed. - [Earnings Calendar](https://the-calendar.net/finance/earnings-calendar/): How earnings calendars work, the key dates per quarter, and where to track upcoming reports. - [FOMC Meeting Calendar 2026](https://the-calendar.net/finance/fed-meeting-calendar/): All 8 FOMC meeting dates for 2026 with rate-decision times, dot-plot meetings, and what to watch. - [US Tax Deadlines 2026](https://the-calendar.net/finance/us-tax-deadlines-2026/): Every important US federal tax deadline in 2026: filing day, extension day, quarterly estimated payments. - [US Stock Market Holidays 2026](https://the-calendar.net/finance/stock-market-holidays-2026/): Complete list of NYSE and Nasdaq closures in 2026, plus early-close days for the bond market. ## Smart-calendar device reviews - [Smart Calendar Reviews](https://the-calendar.net/reviews/): Reviews of smart calendar devices like Skylight Calendar, Echo Show, and Hearth Display. - [Skylight Calendar 15" Review](https://the-calendar.net/reviews/skylight-calendar-review/): Hands-on review of the Skylight Calendar 15" — features, pricing, family sync, photo display, and whether it's worth the subscription. - [Skylight Plus vs Skylight Base](https://the-calendar.net/reviews/skylight-plus-vs-base/): Detailed comparison of Skylight's free tier vs Skylight Plus subscription — features, pricing, and who needs each. - [Echo Show 15 vs Skylight Calendar](https://the-calendar.net/reviews/echo-show-15-vs-skylight/): Side-by-side comparison of Amazon Echo Show 15 and Skylight Calendar 15" for family calendar use. - [Best Digital Calendar Frames 2026](https://the-calendar.net/reviews/best-digital-calendar-frames/): Our picks for the best digital wall calendar displays in 2026 — Skylight, Echo Show, Hearth, Aura, and more. - [Skylight vs Hearth Display](https://the-calendar.net/reviews/skylight-vs-hearth/): Comparing the two leading family-calendar wall displays in 2026 — Skylight 15" and Hearth Display. ## Week-number references - [Week Numbers](https://the-calendar.net/week-numbers/): ISO week-number reference tables for 2025, 2026, 2027, and 2028. - [ISO Week Numbers 2025](https://the-calendar.net/week-numbers/2025/): Complete ISO week table for 2025 — 52 weeks, each with start and end date. - [ISO Week Numbers 2026](https://the-calendar.net/week-numbers/2026/): Complete ISO week table for 2026 — 53 weeks, each with start and end date. - [ISO Week Numbers 2027](https://the-calendar.net/week-numbers/2027/): Complete ISO week table for 2027 — 52 weeks, each with start and end date. - [ISO Week Numbers 2028](https://the-calendar.net/week-numbers/2028/): Complete ISO week table for 2028 — 52 weeks, each with start and end date. ## Optional - [About](https://the-calendar.net/about/): Editorial standards and how data is sourced. - [Contact](https://the-calendar.net/contact/): Corrections and partnership inquiries. - [Privacy](https://the-calendar.net/privacy/): What's collected (essentially nothing — tool inputs never leave the browser). - [RSS feed](https://the-calendar.net/feed.xml): Latest article updates. - [Sitemap](https://the-calendar.net/sitemap.xml): All indexable URLs.