It's a library, that exposes DI-ready and mockable implementation of current date and time, or date and time with offset.
IDateTimeProvider dateTimeProvider = new DateTimeProvider();
DateTime moment = dateTimeProvider.Now();
DateTime momentInUtc = dateTimeProvider.UtcNow();
DateTimeOffset momentWithOffset = dateTimeProvider.NowOffset();
DateTimeOffset momentWithZeroOffset = dateTimeProvider.UtcNowOffset();
ISystemTime systemTime = new SystemTime();
DateTime moment = systemTime.Now();
DateTime momentInUtc = systemTime.UtcNow();
AceCSharp.Time is Copyright © 2022 Dimitrie Tataru and other contributors under the MIT license.