Everything you need for precise time handling

Built for .NET developers who need accurate date, time, and timezone operations.

⏱

Vali-Time

High-precision time unit conversions with decimal accuracy. Convert between milliseconds, seconds, minutes, hours, days and more. Format, clamp, compare and break down durations.

📅

Vali-Date

Full date arithmetic — diff, add, subtract, startOf, endOf, isWeekend, isLeapYear, weekOfYear, dayOfYear, progress in year/month and quarter operations.

📆

Vali-Range

Expressive date range operations: union, intersection, gaps, split by day/week/month/quarter. Enumerate workdays, expand, shrink, shift and merge ranges fluently.

🗓

Vali-Calendar

Workday calendar with pluggable holiday provider support. Calculate workdays between dates, add workdays, query weeks and months, and detect first/last day boundaries.

⏳

Vali-Duration

High-precision decimal Duration value type. Factory methods from milliseconds to years, full arithmetic operators, TimeSpan interop, formatting and unit conversion.

🎂

Vali-Age

Age calculation from a birthdate. Get years, exact breakdown, formatted strings, relative descriptions, birthday detection, next/previous birthday and days until birthday.

🔄

Vali-Schedule

Fluent builder for recurring schedules — daily, weekly, monthly, yearly. Query next/previous occurrences, enumerate occurrences in a range, and use custom predicates.

🌍

Vali-Holiday

35+ country holiday data with Easter-based movable holidays. Register providers, check if a date is a holiday, get next/previous holidays and detect long weekends.

🌐

Vali-TimeZone

45+ curated IANA timezone zones. Convert between zones, handle DST, compute offset differences, find zones by country, format with zone info and compare instants.

precision ecosystem

Nine modules. One time ecosystem.

Nine focused packages. Use one or all — they compose naturally.

--:--:--

ValiTimeZone.Now("local")

🌐Vali-TimeZone

Now("America/Lima")

--:--:--

🌍Vali-Holiday

IsHoliday(Today, "US")

—

⏱Vali-Time

Convert(90, Min, Hours)

"1.50 h"

📆Vali-Range

Intersect(rangeA, rangeB)

3 overlapping days

🗓Vali-Calendar

WorkdaysIn(30d)

~22 workdays

⌛Vali-Duration

From(TimeSpan.FromHours(2))

"2h 0m 0s"

🔄Vali-Schedule

Every(1,Week).On(Mon)

next: —

🎂Vali-Age

Years(Jan 15, 1993)

33 years

⏳Vali-CountDown

TimeUntil(NewYear)

0d remaining

Program.cs

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builder.Services.AddValiTempo();
// Inject what you need
public class ScheduleService(
    IValiTime time,
    IValiDate date,
    IValiHoliday holiday,
    IValiTimeZone tz) {
  public bool IsBusinessHour(string zone)
    => !holiday.IsHoliday(DateTime.Today, "PE")
        && time.Convert(9, TimeUnit.Hours, TimeUnit.Minutes)
            <= tz.Now(zone).TimeOfDay.TotalMinutes;
}