Looking to determine the timezone based on a specific time, with no concern for the date but accounting for daylight savings.
For example:
get_timezone("15:00");
Is there an easy method to achieve this?
Looking to determine the timezone based on a specific time, with no concern for the date but accounting for daylight savings.
For example:
get_timezone("15:00");
Is there an easy method to achieve this?
The time zone cannot be directly obtained from the time, but you can refer to Date.prototype.getTimezoneOffset() for assistance.
By calling the getTimezoneOffset() method, you will receive the current locale's time-zone offset from UTC in minutes.
Here is an example:
var x = new Date();
var currentTimeZoneOffsetInHours = x.getTimezoneOffset() / 60;
Absolutely not. Consider this scenario: you're providing the function with 15:00, indicating 3PM. But which timezone is it referring to? There's no way to determine that. It's akin to me stating that it's quarter to without specifying the hour it's referencing.
In JavaScript, the only means of obtaining a timezone is through utilizing the Date object. However, this solely reveals the timezone of the device executing your code, offering no insight into the timezone under which the given time was established.
It's worth mentioning that daylight saving time isn't universally observed, as indicated by contrary information. To my knowledge, there isn't a single timezone where DST has consistently been in effect...
When it comes to gathering TimeZone data, simply having a Date and an offset is not enough. Understanding the location is crucial.
Javascript does not have knowledge of its own location, but it does have access to the current UTC offset. However, this is distinct from being aware of the specific Time Zone, especially when daylight savings time complicates matters.
This discrepancy has presented challenges for server applications that rely on knowing their Time Zone and accurately reporting dates within that zone.
As a personal guideline, I find it best to utilize Long or long (a 64-bit number) for storing, transmitting, and manipulating date times or intervals. Conversion to Date, Calendar, or DateTime objects should only occur during interactions with individuals.
After acquiring a date object, for example by invoking new Date(), you have the ability to utilize .getTimezoneOffset() in order to obtain the minute difference between the date object and Coordinated Universal Time (UTC), providing valuable timezone details.
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