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- What is the difference between UTC and GMT? - Stack Overflow
UTC, which stands for Coordinated Universal Time in English, is defined by atomic clocks, but is otherwise the same In UTC a second always has the same length Leap seconds are inserted in UTC to keep UTC and GMT from drifting apart By contrast, in GMT the seconds are stretched as necessary, so in principle they don’t always have the same
- How to initialize a JavaScript Date to a particular time zone
Background JavaScript's Date object tracks time in UTC internally, but typically accepts input and produces output in the local time of the computer it's running on It has very few facilities for working with time in other time zones The internal representation of a Date object is a single number - namely timestamp - representing the number of milliseconds that have elapsed since 1970-01-01
- UTC和GMT什么关系？ - 知乎
UTC 是我们现在用的时间标准， GMT 是老的时间计量标准。UTC是根据原子钟来计算时间，而GMT是根据地球的自转和公转来计算时间，也就是太阳每天经过位于英国伦敦郊区的 皇家格林威治天文台 的时间就是中午12点，。由于现在世界上最精确的原子钟50亿年才会误差1秒 ( 最精确原子钟问世：50亿年误差
- date - Is it always a good idea to store time in UTC or is this the . . .
Generally, it is the best practice to store time in UTC and as mentioned in here and here Suppose there is a re-occurring event let's say end time which is always at the same local time let's say
- Storing DateTime (UTC) vs. storing DateTimeOffset - Stack Overflow
I usually have an "interceptor" that right before reading writing from to the database does DateTime conversion (from UTC to local time, and from local time to UTC), so I can use DateTime Now (
- SQL Server - Convert date field to UTC - Stack Overflow
I have recently updated my system to record date times as UTC as previously they were storing as local time I now need to convert all the local stored date times to UTC I was wondering if there
- datetime - How to get UTC time in Python? - Stack Overflow
datetime now(timezone utc) datetime now(timezone utc) timestamp() * 1000 # POSIX timestamp in milliseconds For your purposes when you need to calculate an amount of time spent between two dates all that you need is to subtract end and start dates The results of such subtraction is a timedelta object From the python docs:
- How do I get a UTC Timestamp in JavaScript? - Stack Overflow
Timestamp is always in UTC new Date() toString() will show you current time zone time representation, new Date() toUTCString() will show you UTC time repr, but new Date() getTime() is always UTC, because that is what Unix time is defined as: "Unix time (also known as POSIX time or epoch time) is a system for describing instants in time
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