dst

问题 From this great answer, I am able to determine daylight saving transitions dates: https://stackoverflow.com/a/24378695/1159939 In addition of those dates, I need to know if the clock is going to increase or decrease and by what amount (is it always an hour?). For example, in time zone US/Pacific, when the local clock reaches 2020-03-08T02:00:00, I need to somehow get value +1h. When the clock reaches 2020-11-01T02:00:00, I need to get value -1h. In NodaTime, there is a Offset.Savings value

问题 I wanted to check the difference in time before and after the daylight saving time started. I am using a JVM where timezone has some issue with DST WRT Brazilian time. I could see the output where it says that 21st October falls under DST, which is wrong as the daylight saving started on 4th of November. I would like to see the timing difference which is 1 Hour in between 20th of October and 21st of October, which I could see in my application because of JRE Timezone issue. Is there any way I

问题 I wanted to check the difference in time before and after the daylight saving time started. I am using a JVM where timezone has some issue with DST WRT Brazilian time. I could see the output where it says that 21st October falls under DST, which is wrong as the daylight saving started on 4th of November. I would like to see the timing difference which is 1 Hour in between 20th of October and 21st of October, which I could see in my application because of JRE Timezone issue. Is there any way I

来源： https://stackoverflow.com/questions/64535463/python-astimezonenone-gives-aware-datetime-unaware-of-dst

来源： https://stackoverflow.com/questions/64147223/python-convert-daylight-saving-time-to-standard-zone-time

问题 I have a pandas dataframe with a Datetime column: Datetime 0 2019-01-01 17:02:00 1 2019-01-01 17:03:00 2 2019-01-01 17:04:00 3 2019-01-01 17:05:00 ... The datetimes are in Eastern Standard Time (EST) WITHOUT Daylight savings adjustments (python doesn't know this). I need to convert the datetimes to US Central (Chicago) WITH Daylight savings adjustments. How can I do this, i.e.: tell python that the datetimes are in EST with no DST convert the datetimes to CT with DST 回答1: Recap: you basically

问题 How do I get the time difference from GMT for a specific date and time zone in Java? Determining whether a specific time zone is in DST is quite straight-forward: boolean isIsraelInDST = TimeZone.getTimeZone("Israel").inDaylightTime(new Date()); How do I get the actual time difference? 回答1: Use TimeZone.getRawOffset(): Returns the amount of time in milliseconds to add to UTC to get standard time in this time zone. Because this value is not affected by daylight saving time, it is called raw

问题 Server Environment Redhat Enterprise Linux PHP 5.3.5 Problem Let's say I have a UTC date and time such as 2011-04-27 02:45 and I want to convert it to my local time, which is America/New_York. Three questions: 1.) My code below might solve the problem, would you agree? <?php date_default_timezone_set('America/New_York'); // Set timezone. $utc_ts = strtotime("2011-04-27 02:45"); // UTC Unix timestamp. // Timezone offset in seconds. The offset for timezones west of UTC is always negative, //

问题 I'm trying to convert a column of GMT timestamp strings into a column of timestamps in Eastern timezone. I want to take daylight savings into account. My column of timestamp strings look like this: '2017-02-01T10:15:21+00:00' I figured out how to convert the string column into a timestamp in EST: from pyspark.sql import functions as F df2 = df1.withColumn('datetimeGMT', df1.myTimeColumnInGMT.cast('timestamp')) df3 = df2.withColumn('datetimeEST', F.from_utc_timestamp(df2.datetimeGMT, "EST"))

问题 I have a quartz cron trigger that looks like so: <bean id="batchProcessCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean"> <property name="jobDetail" ref="batchProcessJobDetail" /> <property name="cronExpression" value="0 30 2 * * ?" /> </bean> How should I solve this, if I have several configurations that happen within the 2-3am period? Is there an accepted best practice? Relevant link: http://www.quartz-scheduler.org/docs/faq.html#FAQ-daylightSavings Basically it