Unix timestamp converter
Convert Unix seconds or milliseconds and ISO 8601 instants.
Open toolDate & time
Generate a Monday-first calendar for a Gregorian month.
Generate a Monday-first calendar for a Gregorian month.
Convert Unix seconds or milliseconds and ISO 8601 instants.
Open toolCalculate the signed number of days between calendar dates.
Open toolAdd calendar months and days, clamping month-end dates when needed.
Open toolCount weekdays between two dates, excluding an optional holiday list.
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