AbsoluteTime with an integer argument behaves strangely.

Posted by dreeves on Stack Overflow See other posts from Stack Overflow or by dreeves
Published on 2010-06-13T23:48:24Z Indexed on 2010/06/13 23:52 UTC
Read the original article Hit count: 174

Filed under:

debugging

|

datetime

|

mathematica

This is strange:

DateList@AbsoluteTime[596523]

returns

{2078, 7, 2, 2, 42, 9.7849}

But

DateList@AbsoluteTime[596524]

returns

{1942, 5, 26, 20, 28, 39.5596}

The question: What's going on? Note that AbsoluteTime with an integer argument is undocumented.

(I think I now know what it's doing but figured this is useful to have as a StackOverflow question for future reference; and I'm curious if there's some reason for that magic 596523 number.)

© Stack Overflow or respective owner

Related posts about debugging

I need help debugging apache with gdb (no debugging symbols found)

as seen on Server Fault - Search for 'Server Fault'
I'm trying to debug a segfault in PHP/Apache running on RHEL4. This is a production server, so I'm trying to install a separate copy of apache and php, and run apache through gdb. When I load httpd through gdb and then do run -X, I get the error (no debugging symbols found)...Error while reading… >>> More
debugging C++ when compared to debugging C

as seen on Stack Overflow - Search for 'Stack Overflow'
HI, I am normally a C programmer. I do regularly debug C programs on unix environment using tools like gdb,dbx. i have never done debugging of big applications of C++. Is that much different from how we debug in C. theoretically i am quite good in C++ but have never got a chance to debug C++ programs… >>> More
How to fix Ogre3d segfault with std::_Rb_tree_insert_and_rebalance ?

as seen on Game Development - Search for 'Game Development'
Hello all. I'm working on a 3d music visualizer using Ogre3d, basically it's a spectrum analizer, a lot like the old xmms plugin: (http)://www.youtube.com/watch?v=_6NKBiwYN24 It works well, the bars are drawn and updated, there are no framerate issues, but it crashes randomly. Sometimes it can run… >>> More
Will logging debugging incur a performance hit if I don't turn debugging on?

as seen on Server Fault - Search for 'Server Fault'
On a Cisco device, I know that enabling debugging can incur a performance hit since debugging has such a high priority on the CPU. I know that to log debugging, you have to set logging up to the debugging level (logging buffered 4096 debugging, for example) and also enable debugging on some feature… >>> More
Debugging unmanaged code while debugging managed code

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, The .NET 3.5 application I am working on consists of bunch of different solutions. Some of these solutions consist of managed code(C#) and others have unmanaged code(C++). Methods written in C# communicate with the ones written in C++. I am trying to trace the dependencies between these various… >>> More

Related posts about datetime

Finding begin and end of year/month/day/hour

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using the following snipped to find the begin and end of several time periods in Joda. The little devil on my left shoulder says thats the way to go... but I dont believe him. Could anybody with some joda experience take a brief look and tell me that the little guy is right? (It will be only… >>> More
Get non-overlapping dates ranges for prices history data

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, Let's assume that I have the following table: CREATE TABLE [dbo].[PricesHist]( [Product] varchar NOT NULL, [Price] [float] NOT NULL, [StartDate] [datetime] NOT NULL, [EndDate] [datetime] NOT NULL ) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples'… >>> More
DateTime.MinValue vs new DateTime() in C#

as seen on Stack Overflow - Search for 'Stack Overflow'
When getting SQL DateTime Resharper suggests to use new DateTime() when value is DBNull.Value. I've always used DateTime.MinValue. Which is the proper way? DateTime varData = sqlQueryResult["Data"] is DateTime ? (DateTime) sqlQueryResult["Data"] : new DateTime(); >>> More
SOLVED: Error 1 Ticks must be between DateTime.MinValue.Ticks and DateTime.MaxValue.Ticks

as seen on Dot net Slackers - Search for 'Dot net Slackers'
This is a simple looking error message that is deceptively hard to track down. Thankfully if you're having this problem then this article should get you back on track without spending hours scratching your head. Scenario It was time to update an existing website so after synchronising my copy of… >>> More
Converting Openfire IM datetime values in SQL Server to / from VARCHAR(15) and DATETIME data types

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
A client is using Openfire IM for their users, and would like some custom queries to audit user conversations (which are stored by Openfire in tables in the SQL Server database). Because Openfire supports multiple database servers and multiple platforms, the designers chose to store all date/time… >>> More