# Event Countdown > Master Time and Date Calculations Every tool and article on Event Countdown is free to use — no sign-up required. The links below are the primary, canonical resources on this site. ## Tools - [Moon Phase Calculator](https://datesconverter.click/tool/moon-phase-calculator/): What the Moon Phase Calculator Actually Tells You (And What Most People Miss) On any given night, the moon you see overhead is the result of a geomet… - [Zodiac Sign Calculator](https://datesconverter.click/tool/zodiac-sign-calculator/): What Even Is a Zodiac Sign, and Why Do People Care So Much? If you've ever filled out a personality quiz online and it asked for your "star sign," yo… - [Calendar Generator](https://datesconverter.click/tool/calendar-generator/): Before You Click "Generate": Understanding What This Tool Actually Does Most people land on a Calendar Generator expecting a simple month-view printo… - [Countdown Timer](https://datesconverter.click/tool/countdown-timer/): The Quiet Precision of a Countdown Timer There is something oddly satisfying about watching a number tick down to zero. Whether you are managing a pr… - [Week Number Calculator](https://datesconverter.click/tool/week-number-calculator/): I Never Knew What Week It Was — Until I Started Using a Week Number Calculator Somewhere around my third year of freelancing, I started noticing a st… - [Date Format Converter](https://datesconverter.click/tool/date-format-converter/): When Date Formats Break Everything You copy a date from a spreadsheet exported in Europe — it reads 23.06.2026 . Your database expects 2026-06-23 . Y… - [Unix Timestamp Converter](https://datesconverter.click/tool/unix-timestamp-converter/): What Unix Timestamps Actually Are (And Why Developers Keep Tripping Over Them) Open any server log, API response, or database dump and you will almos… - [Age Calculator](https://datesconverter.click/tool/age-calculator/): How to Use an Age Calculator to Get Accurate Results in Seconds Figuring out someone's exact age sounds simple until you actually try to do it by han… - [Date Difference Calculator](https://datesconverter.click/tool/date-difference-calculator/): Time Is Just Math — And Date Difference Calculators Prove It There's a moment most people have experienced — staring at a calendar, trying to figure … - [Business Days Calculator](https://datesconverter.click/tool/business-days-calculator-2/): Calculate business days between two dates instantly. Skip weekends and select public holidays automatically. Free, no-login business days calculator … - [Add Business Days to a Date](https://datesconverter.click/tool/add-business-days/): Free tool to add or subtract business days from any date. Skip weekends automatically and find exact deadlines, delivery dates, and project milestone… - [Deadline Date Calculator](https://datesconverter.click/tool/deadline-calculator/): Calculate exact project deadlines from a start date and duration. Skip weekends and public holidays automatically. Free online business day deadline … - [Duration Between Two Dates](https://datesconverter.click/tool/duration-between-dates/): Calculate the exact duration between two dates. Get the precise gap in years, months, weeks, days, hours, and minutes — no sign-up, works instantly i… - [Working Hours Calculator](https://datesconverter.click/tool/working-hours-calculator/): Free Working Hours Calculator: enter a date range, shift start/end times, and break duration to instantly find total working hours, minutes, and days. - [Countdown Timer to a Date](https://datesconverter.click/tool/countdown-to-date/): Free live countdown timer to any date. See days, hours, minutes and seconds remaining until your deadline, event, or due date — no signup needed. - [Net Working Days (NETWORKDAYS) Tool](https://datesconverter.click/tool/net-working-days/): Free online NETWORKDAYS calculator: count net working days between two dates, exclude weekends and custom holidays. No Excel needed — instant, accura… - [Date Difference in Weeks](https://datesconverter.click/tool/weeks-between-dates/): Calculate the difference between two dates in weeks instantly. See full weeks, remaining days, and partial weeks — ideal for sprints, billing, and de… - [Time Zone Deadline Converter](https://datesconverter.click/tool/timezone-deadline-converter/): Free Time Zone Deadline Converter: enter a deadline in any time zone and instantly see the exact local cutoff time for every major city worldwide. No… - [SLA Resolution Time Calculator](https://datesconverter.click/tool/sla-resolution-calculator/): Free SLA Resolution Time Calculator: enter ticket open time, SLA hours, and business hours to get the exact due date, skipping nights, weekends, and … - [Age & Anniversary Duration Counter](https://datesconverter.click/tool/age-duration-counter/): Free Age & Anniversary Duration Counter: enter any past date and find out exactly how many years, months, weeks, and days have passed since that mile… - [Recurring Deadline Scheduler](https://datesconverter.click/tool/recurring-deadline-scheduler/): Free recurring deadline scheduler: generate weekly, biweekly, monthly, quarterly due dates that skip weekends. No sign-up, works instantly in your br… ## Articles - [Get a US Number for WhatsApp From Anywhere: g100.us](https://datesconverter.click/us-number-for-whatsapp-g100us/): Get a US number for WhatsApp in seconds with g100.us — one number for calls, SMS & WhatsApp, 100+ countries, flat pricing, no contracts. - [How to Get a Permanent Business Number Online With g100.us](https://datesconverter.click/permanent-business-number-online-g100us/): Get a permanent business number online in minutes with g100.us — one number for calls, SMS & WhatsApp across 100+ countries, instant activation, no c… - [Business Days and Deadlines: Your Most-Asked Questions, Answered](https://datesconverter.click/business-days-deadlines-faq/): Quick answers to the trickiest business-day questions: weekend deadlines, holiday rules, calendar vs. business days, time zones, and more. - [Average Days to Close: What Duration Data Reveals About Real-World Deadlines](https://datesconverter.click/average-days-to-close-duration-data/): What duration data really shows about deadlines: sales cycles, contract review times, and the planning fallacy that makes every estimate too optimist… - [Project Deadline Checklist: 12 Things to Verify Before You Commit to a Due Date](https://datesconverter.click/project-deadline-checklist-before-committing/): A 12-point checklist to validate any project deadline — covering business days, holidays, dependencies, time zones, buffers, and stakeholder availabi… - [Inclusive vs. Exclusive Counting: Why Your Duration Math Keeps Being Off by One](https://datesconverter.click/inclusive-vs-exclusive-date-counting/): Off-by-one errors in date durations come from inclusive vs. exclusive counting. Learn clear rules for contracts, notice periods, and business day cal… - [How I Missed a Filing Deadline by One Day (and the Duration-Counting Lesson It Taught Me)](https://datesconverter.click/missed-filing-deadline-by-one-day/): Missed a filing deadline by one day? Learn the business-day counting rule that trips up even careful professionals — and how to never miscalculate a … - [Business Day Conventions Explained: How Banks, Courts, and Shippers Count Time Differently](https://datesconverter.click/business-day-conventions-explained/): Learn how business-day conventions (Following, Modified Following, Preceding) work in finance, legal deadlines, and shipping — and why the difference… - [Do Public Holidays Count as Business Days? Settling the Confusion Once and For All](https://datesconverter.click/do-public-holidays-count-as-business-days/): Do public holidays count as business days? The answer depends on your country, region, and industry. We break down every variable that affects the co… - [Adding Working Days to a Date: A Step-by-Step Guide for Setting Realistic Due Dates](https://datesconverter.click/adding-working-days-to-a-date/): Step-by-step guide to adding working days to a date for deadline calculation — covers weekend skip rules, holidays, Excel WORKDAY formula, and Python… - [7 Deadline-Tracking Mistakes That Make Projects Slip (and How to Avoid Them)](https://datesconverter.click/deadline-tracking-mistakes-projects-slip/): Discover 7 common deadline-tracking mistakes — from off-by-one day errors to forgotten holidays and time zones — and how to fix them before projects … - [What Does '5 Business Days' Actually Mean? A Plain-English Breakdown](https://datesconverter.click/what-does-5-business-days-mean/): What does "5 business days" really mean? Learn when the clock starts, why weekends and holidays don't count, and how to calculate deadlines correctly. - [Business Days vs. Calendar Days: The Difference That Quietly Wrecks Your Deadlines](https://datesconverter.click/business-days-vs-calendar-days/): Business days vs calendar days: how the difference reshapes contract deadlines, shipping windows, and SLAs — and why being explicit saves real money. - [How to Calculate Business Days Between Two Dates (Without Counting on Your Fingers)](https://datesconverter.click/calculate-business-days-between-two-dates/): Learn the exact method to count business days between two dates — handling weekends, public holidays, and the start-date trap. Includes spreadsheet f… ## About & Policies - [About Us](https://datesconverter.click/about-us/) - [Contact Us](https://datesconverter.click/contact-us/) - [Terms of Service](https://datesconverter.click/terms-of-service/) - [Disclaimer](https://datesconverter.click/disclaimer/) - [Privacy Policy](https://datesconverter.click/privacy-policy/) ## Notes - Full URL list: https://datesconverter.click/sitemap.xml - Content is original and maintained by Event Countdown. Attribution is appreciated when cited.