dst

问题 I need to change DST and time zone via API in my application. I modified & copied example of "SetTimeZoneInformation" usage by the end of the following link and have run it: http://msdn.microsoft.com/en-us/library/windows/desktop/ms724944(v=vs.85).aspx I am assuming that my time settings should reflect on my time settings in tray or control panel. But nothing happens. Following thing also should be noticed. This code modifies "HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation" key

问题 I need to change DST and time zone via API in my application. I modified & copied example of "SetTimeZoneInformation" usage by the end of the following link and have run it: http://msdn.microsoft.com/en-us/library/windows/desktop/ms724944(v=vs.85).aspx I am assuming that my time settings should reflect on my time settings in tray or control panel. But nothing happens. Following thing also should be noticed. This code modifies "HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation" key

问题 A couple of premises: By "prevailing time" I mean how it is handled locally (my industry uses this terminology). For example, Eastern Prevailing Time has a UTC offset of -05:00 except during DST when it is -04:00 I find it much cleaner to handle range data by treating the end value as exclusive, rather than the hackish inclusive approach (where you have to subtract an epsilon from the first value beyond the end of your range). For example, the range of values from 0 (inclusive) to 1

问题 A couple of premises: By "prevailing time" I mean how it is handled locally (my industry uses this terminology). For example, Eastern Prevailing Time has a UTC offset of -05:00 except during DST when it is -04:00 I find it much cleaner to handle range data by treating the end value as exclusive, rather than the hackish inclusive approach (where you have to subtract an epsilon from the first value beyond the end of your range). For example, the range of values from 0 (inclusive) to 1

问题 My service api takes in startDate for quartz Job and day of Month for the job to executed. Internally, I convert this to cron expression and save in quartz. For example, a user in PST submits a job request today (Nov 3 2017) as follows. { "start": "2017-11-03T18:00:00-07:00", "dayOfMonth" : 15 } Here the user wants to schedule a job that fires on 15th of each month at 6 PM, starting from 2017-11-03. so the first-day quartz will fire will be 2017-11-15. This is how the above request gets

问题 I want to detect if I'm in winter or summer time. My current approach is: if date +%Z | grep -e CET -e EST; then # I'm in winter time else # I'm in summer time fi which have obvious drawback as you have to know all the timezone names. 回答1: Perl to the rescue: if perl -e 'exit ((localtime)[8])' ; then echo winter else echo summer fi 回答2: I don't now if this exactly answers your question, but it gives you some tools to help you better understand and test whats going on. You can use date and

问题 In one of the Oracle database server it is showing "+01:00" when I fire the "Select dbtimezone from dual" does that mean in summer the clock will shift one hour ahead ?. In another server it is showing "+00:00" does that mean the database server setting is GMT ? but I am using the sysdate in oracle pl/sql. Client is saying the Aix server is on DST so would that mean the DB server will adopt the AIX server setting after clock change ? How to fix this problem. 回答1: Answer is: It depends. In

问题 In one of the Oracle database server it is showing "+01:00" when I fire the "Select dbtimezone from dual" does that mean in summer the clock will shift one hour ahead ?. In another server it is showing "+00:00" does that mean the database server setting is GMT ? but I am using the sysdate in oracle pl/sql. Client is saying the Aix server is on DST so would that mean the DB server will adopt the AIX server setting after clock change ? How to fix this problem. 回答1: Answer is: It depends. In

问题 In one of the Oracle database server it is showing "+01:00" when I fire the "Select dbtimezone from dual" does that mean in summer the clock will shift one hour ahead ?. In another server it is showing "+00:00" does that mean the database server setting is GMT ? but I am using the sysdate in oracle pl/sql. Client is saying the Aix server is on DST so would that mean the DB server will adopt the AIX server setting after clock change ? How to fix this problem. 回答1: Answer is: It depends. In

问题 We are having an issue with daylight savings in PostgreSQL 9.0.10. In the attempt to use the OS timezone files structure, we replace the PostgreSQL's files with a link to OS timezone files (and renamed the original ones) $ ls -l /usr/local/pgsql/share/timezone/Brazil /usr/local/pgsql/share/timezone/Brazil -> /usr/share/zoneinfo/Brazil/ Querying the database, everything looks ok: => SELECT * FROM pg_timezone_names where name like '%Brazil%'; name | abbrev | utc_offset | is_dst ----------------