Top 20 NuGet date Packages

Randomizer.NET is .NET library to generate random values of predefined types.
Uses database metadata to generate deep date update procedures for SQL Server.
Common tools to create date pickers for ASP.NET Core MVC applications
Contains shared dll's and helpers for common .net tasks .
Time library is a small .net standard lib created to allow using Time without DateTime structure. It could be helpful while you are building clock or timer.
jQuery plugin with a datetime picker, date picker and time picker, all in one.
MomentJs ported for C# to bring missing functions to DateTime.
Provides an interface IDataTimeProvider and static container.
A class which defines a date which can have null for components (day, month, year) of the date.
Provides date range facilities for projects. Start/End Date pairs and attributes.
This package contains commonly used functions for manipulating date and time.
Accepts a date, a mask, or a date and a mask. Returns a formatted version of the given date. The date defaults to the current date/time. The mask defaults to dateFormat.masks.default.
Converting Persian Date to Gerigorian and Islamic and vice versa.
This dll contains a class named PersianDateTime which persian developers can use instead of System.DateTime structure. This class also contains most of the methods and properties of the conventional DateTime structure such as DateTime.Now and DateTime.TimeOfDay.
This directive allows you to add a jQueryUI DatePicker to your form elements
Date/time picker widget based on twitter bootstrap
English language date/time parser
Fully customizable calendar for Xamarin.Android with a wide variety of features and displaying modes.
The Multi Date Picker package is an Umbraco data type for creating a collection of dates within Umbraco. An editor can add, edit and delete dates within a property on a page. This package reuses Umbraco's built in date picker.
Store any time period as 64-bit integer. Optimized for speed, space, compression and sorted storage like B+ trees.