Date & Time Guides
Step-by-step guides that walk you through every date and time calculation with clear examples and practical tips.
How to Calculate Age From a Birth Date
Calculating exact age from a birth date requires more than simple year subtraction. This guide walks through calculating years, months, and days correctly, handling month-end edge cases, and using online tools to verify your result.
→Beginner GuideHow to Count Working Days Between Two Dates
Counting working days requires excluding weekends and holidays from a date range. This guide explains the manual counting method, how to use spreadsheet functions, and how to handle holidays and regional calendar differences.
→Beginner GuideHow to Convert Between Time Zones Step by Step
Converting between time zones requires knowing each zone's UTC offset and accounting for daylight saving time. This guide explains the conversion method clearly, walks through examples, and shows you how to verify your results.
→Beginner GuideHow to Calculate the Number of Days Between Two Dates
Calculating the days between two dates requires handling month lengths, leap years, and whether to include the endpoints. This guide explains the manual method and the fastest tool-based approach for any date range.
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