Put simply, a Unix timestamp is the number of seconds that has passed since midnight on JanuUTC (short for Coordinated Universal Time somehow), also known as the Unix epoch. That’s one of the things that makes it so popular to developers. The Unix timestamp itself remains constant regardless of what time zone you’re in. (You can pause this if you’re trying to copy the timestamp.) That means that it’s currently on in your time zone. Once this page finishes loading, the current Unix timestamp will be displayed here, along with your local time and date.Īccording to your computer’s system clock, the current Unix timestamp is loading. And, if you’d like to specify a timestamp other than now for the calculation of relative dates, you can add a relative timestamp field to the form. Long unixTimestampInMilliseconds = utcNowOffset.ToUnixTimeMilliseconds() ĭateTimeOffset utcNowOffsetTest = UnixDateTime.FromUnixTimeMilliseconds(unixTimestampInMilliseconds) Īssert.AreEqual(utcNowOffset.Millisecond, utcNowOffsetTest.This tool uses PHP’s strtotime function, so any date & time input accepted by PHP will work. Long unixTimestampInSeconds = utcNowOffset.ToUnixTimeSeconds() ĭateTimeOffset utcNowOffsetTest = UnixDateTime.FromUnixTimeSeconds(unixTimestampInSeconds) Īssert.AreEqual(utcNowOffset.Year, utcNowOffsetTest.Year) Īssert.AreEqual(utcNowOffset.Month, utcNowOffsetTest.Month) Īssert.AreEqual(utcNowOffset.Date, utcNowOffsetTest.Date) Īssert.AreEqual(utcNowOffset.Hour, utcNowOffsetTest.Hour) Īssert.AreEqual(utcNowOffset.Minute, utcNowOffsetTest.Minute) Īssert.AreEqual(utcNowOffset.Second, utcNowOffsetTest.Second) Return utcDateTime.Ticks / 10000L - 62135596800000L ĭateTimeOffset utcNowOffset = new DateTimeOffset(utcNow) Public static long ToUnixTimeMilliseconds(this DateTimeOffset utcDateTime) Public static long ToUnixTimeSeconds(this DateTimeOffset utcDateTime) Throw new ArgumentOutOfRangeException("milliseconds", milliseconds, "") Public static DateTimeOffset FromUnixTimeMilliseconds(long milliseconds) Throw new ArgumentOutOfRangeException("seconds", seconds, "") Public static DateTimeOffset FromUnixTimeSeconds(long seconds) NET 4.6 and later: public static class UnixDateTime The documentation for it is here: and here. Long backToMillisecs = backToUnixTimeOffset.ToUnixTimeMilliseconds() To convert it back from DateTime to Unix millisecond time: DateTimeOffset backToUnixTimeOffset = new DateTimeOffset(dt, TimeSpan.Zero) Next create a DateTime instance from the offset: DateTime dt = new DateTime(unixTimeOffset.Ticks, DateTimeKind.Utc) Note: the offset has an Offset property which will be set to TimeSpan.Zero, which represents UTC, it is not timezone adjusted. To use it, first convert the milliseconds to a DateTimeOffset: long millisecs = 1677514053797 // replace this with the Unix time you need to convertĭateTimeOffset unixTimeOffset = DateTimeOffset.FromUnixTimeMilliseconds(millisecs) This accepts the Unix time in milliseconds that have elapsed since (January 1, 1970, at 12:00 AM UTC). NET the DateTimeOffset class has had a method called FromUnixTimeMilliseconds which does do what you're looking for. Return new DateTimeOffset(1970, 1, 1, 0, 0, 0, TimeSpan.Zero).AddTicks(timeInTicks) įor a while in. Public static DateTimeOffset ToDateTimeOffsetFromEpoch(this long intDate) / Converts the given epoch time to a UTC. Return new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddTicks(timeInTicks) Var timeInTicks = intDate * TimeSpan.TicksPerSecond Public static DateTime ToDateTimeFromEpoch(this long intDate) / Converts the given epoch time to a with kind. Var ticks = date.Ticks - new DateTimeOffset(1970, 1, 1, 0, 0, 0, TimeSpan.Zero).Ticks Public static long ToEpochTime(this DateTimeOffset dateTime) Var ts = ticks / TimeSpan.TicksPerSecond Var ticks = date.Ticks - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).Ticks Public static long ToEpochTime(this DateTime dateTime) / Converts the given date value to epoch time. See IdentityModel.EpochTimeExtensions public static class EpochTimeExtensions
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