First, dt is assigned a naive datetime that is converted from the 'zero' time or UNIX epoch, which is January 1st, 1970 at midnight. The example above was executed on a computer that was configured for Eastern Standard Time (EST). There is a GitHub issue from 2019 that provides some background into this, with the following example: > from datetime import datetime The specific issue is that some Python date and time functions accept naive timestamps and assume that they represent local time, according to the timezone that is configured on the computer running the code. I would have made it more clear that these functions work with naive time, maybe by calling them naive_utcnow() and naive_utcfromtimestamp().īut their names are not the problem here. A function that is called utcnow() should be expected to return UTC datetimes, as implied by the name. If you ask me, I think the names of these functions are misleading. This is in contrast to 'aware' datetime objects, which do have a timezone attached to them explicitly. A naive datetime object is one that does not have a timezone, which means that it can only be used in a context where the timezone does not matter or is already known in advance. The problem that the Python maintainers have found comes from the fact that these functions return 'naive' datetime objects. What's Wrong with utcnow() and utcfromtimestamp()? In this short article I'll tell you more about why these functions are getting the axe, and what to replace them with. If you have followed my web development tutorials you must have seen me use utcnow() a lot, so I will clearly need to re-train myself to use an alternative, in preparation for the eventual removal of this function (likely a few years out, so no need to panic!). JavaScript does not support leap seconds.I was going through the release notes of the new Python 3.12 version the other day, and one item caught my attention in the deprecations section:ĭatetime.datetime’s utcnow() and utcfromtimestamp() are deprecated and will be removed in a future version. Some browsers use the current DST (Daylight Saving Time) rules for all dates in history. Please note: All tools on this page are based on the date & time settings of your computer and use JavaScript to convert times. More date related programming examples: What's the current week number? - What's the current day number?

Thanks to everyone who sent me corrections and updates! Works for Windows PowerShell v1 and v2Ĭommand line: perl -e 'print scalar(localtime( epoch))' (If Perl is installed) Replace 'localtime' with 'gmtime' for GMT/UTC time. Math.floor(new Date().getTime()/1000.0) The getTime method returns the time in milliseconds.ĭATETIME() -, then use: get-epochDate 1520000000.

SELECT dbinfo('utc_current') FROM sysmaster:sysdual SELECT (CAST(SYS_EXTRACT_UTC(SYSTIMESTAMP) AS DATE) - TO_DATE('','DD/MM/YYYY')) * 24 * 60 * 60 FROM DUAL SELECT unix_timestamp(now()) More MySQL examples

(version 18+), older versions: calendar:datetime_to_gregorian_seconds(calendar:universal_time())-719528*24*3600. timeIntervalSince1970] (returns double) or NSString *currentTimestamp = timeIntervalSince1970]] ĭouble now = std::chrono::duration_cast (std::chrono::system_clock::now().time_since_epoch()).count() Įpoch := DateTimetoUnix(Now) Tested in Delphi 2010.Įrlang:system_time(seconds). Long epoch = System.currentTimeMillis()/1000 Returns epoch in seconds.ĭ() (.NET Framework 4.6+/.NET Core), older versions: var epoch = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds

Convert epoch time to wall clock