dst

I've run the following in the console on Firefox (version 21) and I'm getting results I don't expect. new Date(1362891600000); var date = new Date(1362891600000); var time = date.getHours(); new Date(date.setHours(date.getHours() + 24)); The result really throws me for a loop. The first date shows up as Eastern Daylight Time, while the second one shows up with Eastern Standard Time. It's totally backwards. This does not happen with IE or with Chrome. What's going on here? This is definitely a bug in Firefox. You should probably report it to them. However, be aware that anything after the

I have a general question about dealing with daylight saving time. I guess its not really PHP specific, but I am writing in PHP, so I figure it wouldn't hurt to include it. I have a calendar app built using jquery fullcalendar. The user views events in their local timezone and my server stores them as UTC datetimes in mysql. (Other questions on stackoverflow suggest that this is the best way to deal with timezones.) So there is a conversion every time the user saves or views events on the calendar. This is working fine, but I am confused about how best to deal with daylight saving time. For

I have an API that needs the timezone. For eg. if I am in california, I need to pass -7 to it when daylight savings is on (California , PDT is GMT - 7) and -8 to it when daylight saving is off. But I am not able to figure out a way of knowing whether on the current date, daylight saving is on or off. Date date1 = new Date(); Calendar cal = Calendar.getInstance(); cal.setTime(date1); double[] coords = db.getCoords(id1); double latitude = coords[0]; double longitude = coords[1]; double timezone = -7; /* For Pacific daylight time (GMT - 7)*/ ArrayList<String> Times = Class.foo(cal, latitude,

just to verify this: I have this lame and brain dead method to calculate the time zone offset for my current location. I wonder if I need to adjust it when Day Light Saving time comes into question (currently we have Winter Time at my location, CET time zone, so it's hard to verify). // The local time zone's offset private int getLocalOffset() { DateTimeZone defaultZone = DateTimeZone.getDefault(); return defaultZone.getOffset(null) / 1000 / 60 / 60; } Thanks for any hint. Normally, Joda time will take care of DST by itself, so you don't have to worry about it. However, I notice that you are

Long story short Is there an official, un-deprecated timezone that PHP5 recognizes for Eastern STANDARD time--not Eastern DAYLIGHT time? Short story long :-P Wow, I can't believe that PHP makes such a cluster-floogen out of setting the time. I would like to use PHP5's date_default_timezone_set() to set the timezone for my script. I want to use standard time. I do not want my script to observe daylight savings time. I do not want to have to use gmtime() and subtract 60*60*5 seconds each time my program writes a time. I don't want to save that value to a variable either. Setting the default

I have a date stored in UTC in my Rails app and am trying to display it to a user who has "Eastern Time (US & Canada)" as their timezone. The problem is that rails keeps converting it to Eastern Daylight Time (EDT) so midnight is being displayed as 8am when it should be 7am . Is there anyway to prevent the DST conversion? >> time = DateTime.parse("2013-08-26T00:00:00Z") => Mon, 26 Aug 2013 00:00:00 +0000 >> time.in_time_zone("Eastern Time (US & Canada)") => Sun, 25 Aug 2013 20:00:00 EDT -04:00 Update I eventually went with a twist on @zeantsoi 's approach. I'm not a huge fan of adding too many

I have time series data obtained from a data logger that was set to one time zone without daylight savings ( NZST or UTC+12:00), and the data spans a few years. Data loggers don't consider DST changes, and are synchronized to local time with/without DST (depending who deployed it). However, when I get the data into R, I'm unable to properly use as.POSIXct to ignore DST. I'm using R 2.14.0 on a Windows computer with these settings: > Sys.timezone() [1] "NZDT" > Sys.getlocale("LC_TIME") [1] "English_New Zealand.1252" Here are three timestamps across the spring DST change, each are spaced 1 hour

How can I get the starting and ending dates for Daylight Savings Time using Noda Time? The function below accomplishes this task but it is horribly unwieldy and is begging for a simpler solution. /// <summary> /// Gets the start and end of daylight savings time in a given time zone /// </summary> /// <param name="tz">The time zone in question</param> /// <returns>A tuple indicating the start and end of DST</returns> /// <remarks>Assumes this zone has daylight savings time</remarks> private Tuple<LocalDateTime, LocalDateTime> GetZoneStartAndEnd(DateTimeZone tz) { int thisYear = TimeUtils