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Time Calculator
Add or subtract days, hours, minutes, and seconds.
⌛
Hours Calculator
Convert hours, minutes, seconds, and calculate after N hours.
⏳
Duration Calculator
Duration between two date-times with total units.
🗓️
Day Counter
Count days between dates, including business days option.
📆
Weekday Calculator
Find weekday for a date and add days or business days.
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Time Zone Converter
Convert a date-time between time zones (DST-aware).
🧾
Time Card Calculator
Calculate work hours from shifts, export CSV/JSON.