timestamp-with-timezone

问题 I have a data set which includes date/timestamps from New York WITHOUT timezone information. EDT or EST are not recorded. Dates include daily data for several years, so it includes both: EDT Timezone EST Timezone I want to translate those date/timestamps to Frankfurt time. This involves using: CET Timezone CEST Timezone Depending on the specific date. I have seen that for the NY time, pytz includes timezone('US/Eastern') , which if I understood correctly includes both timezones (New York

问题 I'm on pandas 0.14.1. Have two DataFrames both indexed by timezone-aware DatetimeIndex: import pandas as pd ix1 = pd.DatetimeIndex(start=pd.Timestamp('20140715', tz='EST5EDT'), end=pd.Timestamp('20140717', tz='EST5EDT'), freq='D', tz='EST5EDT') ix2 = pd.DatetimeIndex([pd.Timestamp('2014-07-11 00:00:00', tz='EST5EDT'), pd.Timestamp('2014-07-21 00:00:00', tz='EST5EDT')]) df1 = pd.DataFrame(0, index=ix1, columns=['A', 'B']) df2 = pd.DataFrame(0, index=ix2, columns=['A', 'B']) Both indices having

问题 I have a simple mobile app that schedules future events between people at a specified location. These events may be physical or virtual, so the time specified for the event may or may not be in the same timezone as the 'location' of the event. For example, a physical meeting may be scheduled for two people in London at local time 10am on a specified date. Alternatively, a Skype call may be scheduled for two people in different timezones at 4pm (in one person's timezone) on a specified date

问题 From colA (EST) colB (local tz) 2016-09-19 01:29:13 US/Central 2016-09-19 02:16:04 Etc/GMT+2 2016-09-19 01:57:54 Europe/London To colA (EST) colB (local tz) colC (timestamp in local tz) 2016-09-19 01:29:13 US/Central 2016-09-19 02:29:13 2016-09-19 02:16:04 Etc/GMT+2 2016-09-19 08:16:04 2016-09-19 01:57:54 Europe/London 2016-09-19 05:57:54 回答1: Read the datetime column as timestamp and localize to US/Eastern time and then apply tz_convert df['colA (EST)'] = pd.to_datetime(df['colA (EST)']).dt

问题 I'm trying to create to following view: CREATE OR REPLACE VIEW view_events AS ( SELECT "rank"() OVER (PARTITION BY "tb1"."innerid" ORDER BY "tb1"."date" ASC) "r" , "tb2"."opcode" , "tb1"."innerid" , "tb1"."date" , From_iso8601_timestamp(tb1.date) as "real_date" , "tb2"."eventtype" , "tb1"."fuelused" , "tb1"."mileage" , "tb1"."latitude" , "tb1"."longitude" FROM rt_message_header tb1 , rt_messages tb2 WHERE ((("tb1"."uuid" = "tb2"."header_uuid") AND ("tb2"."opcode" = '39')) AND ("tb2"."type" =

问题 I am trying to store OffsetDateTime("2019-01-14 21:10:00.02+03") with timezone(+03) using JDBC to PostgreSQL. But when retrieve data using sql query I always get the +00 result. Is there any way to store offset (+03) with datetime in postgres ? 回答1: Is there any way to store offset (+03) with datetime in postgres ? Yes, but as @Andreas says, the offset will have to be in a separate column. The column type name timestamp with time zone in PostgreSQL is a bit misleading; it is really just

问题 I’ve been conditioned to store past dates as UTC in a database since that is in fact when the event occurred. For future dates, I would store it with a specific timezone, to avoid changes such as leap seconds or timezone rule changes. Postgres has timestamp with timezone , but under the covers, it stores it as UTC, inferring that the specified timezone is an offset of UTC. If the timezone rules were to change, that would not be reflected in the column. What is recommended in this case? 回答1:

问题 I have following code: $date = new DateTime(date("Y-m-d H:i:s"), new DateTimeZone('Asia/Karachi')); echo $date->format('Y-m-d H:i:s'); Output: 2015-08-26 17:46:05 Actual Result should be: 2015-08-26 13:46:05 How to set the time zone, so that actual output comes? 回答1: use this line in your codes date_default_timezone_set("Asia/Karachi"); like <?php date_default_timezone_set("Asia/Karachi"); echo date('d-m-Y H:i:s'); ?> 回答2: Method 1 (Editing Php.ini) 1) Open your php.ini file 2) Add the

问题 I'm trying to use google Time Zone API. I provide the longitude and latitude and the API give me the timezone. How can I get the local time with this following value (dstOffset and rawOffset) ? Here is the Json { "dstOffset" : 0.0, "rawOffset" : -28800.0, "status" : "OK", "timeZoneId" : "America/Los_Angeles", "timeZoneName" : "Pacific Standard Time" } I have tried this javascript function but I don't get the correct time. function calcTime(offset) { var d = new Date(); var utc = d.getTime() +

问题 I did some research on internet but still confused. Is UNIX time universal time like GMT/UTC or does it vary from place to place like a local time? I know UNIX time is counted from 1st Jan, 1970 00:00:00 GMT. When I use getTime() function in Java (more specifically Date d= new Date(); long currentTime d.getTime()) I am getting the UNIX time in milliseconds. Now If person A and person B use the same function who are sitting in two different time zones, will they get the same result? 回答1: Now