A date format is a user-specified sequence of case-sensitive characters describing the format of date/time values. For example, to show your dates as "16-Mar-2002" you would use the date format "dd-MMM-yyyy". You can use any punctuation, but letters must be in one of the valid patterns of characters listed below:
|yyyy||Year||2002, 53, 1997, 500 BC||Literal year values, where "53" and "1066" will mean the years 53 and 1066 AD, and "200 BC" means the year 200 BC.|
|yy||Year||02, 53, 97||Two-digit years, with Y2K fix, where "53" and "10" will mean the years 1953 and 2010. Assumes any two-digit years fall within the last 80 years or next 20 years.|
|YYYY||Week year||2012||As per yyyy, except this is the "week year", i.e. the year of the current week-in-year, which is not always the same for a few days in the first and last weeks of the year.|
Only available in Omniscope installations based on Java 7, typically 2.8+.
|w||Week||1, 3, 52||Week in year|
Warning: week of year yields different results in different locales, due to different regional settings for first-day-in-week.
See Settings > Advanced file settings > Regional Settings (2.8+)
|MMMM||Month||March, December||Full month name|
|MMM||Month||Mar, Dec||Abbreviated month name|
|MM||Month||03, 12||Two-digit month number, padded with zero|
|M||Month||3, 12||One- or two-digit month number, no padding|
|dd||Day of month||03, 16||Two-digit day in month, padded with zero|
|d||Day of month||3, 16||One- or two-digit day in month, no padding|
|EEEE||Weekday||Tuesday||Full name of day in week|
|EEE||Weekday||Tue||Abbreviated name of day in week|
|aa||AM/PM||AM, PM||Use aa for the AM/PM marker|
|HH||Hour (24)||00, 07, 15, 23||Hour of day in 24-hour clock, from 0 to 23, padded with zero|
|H||Hour (24)||0, 7, 15, 23||Hour of day in 24-hour clock, from 0 to 23, not padded|
|hh||Hour (12)||01, 07, 11, 12||Hour of day in 12-hour clock, from 1 to 12, padded with zero|
|h||Hour (12)||1, 7, 11, 12||Hour of day in 12-hour clock, from 1 to 12, not padded|
|mm||Minutes||00, 09, 23, 59||Minutes past the hour, padded with zero|
|m||Minutes||0, 9, 23, 59||Minutes past the hour, not padded|
|ss||Seconds||00, 09, 23, 59||Seconds, padded with zero|
|s||Seconds||0, 9, 23, 59||Seconds, not padded|
|SSS||Milliseconds||000, 009, 023, 595||Milliseconds, padded with zero|
|S||Milliseconds||0, 9, 23, 595||Milliseconds, not padded|
|X||Timezone||-07, Z, +10|
ISO 8601 timezone, hours only (offset) or 'Z' for UTC
|XX||Timezone||-0700, Z, +1000||ISO 8601 timezone, hours and minutes (offset) or 'Z' for UTC|
|XXX||Timezone||-07:00, Z, +10:00||ISO 8601 timezone, alternative ':' separated format, or 'Z' for UTC|
|dd-MM-yy||for values like:||21-11-99||meaning 21-11-1999|
|yyyy.MM.dd||for values like:||2001.07.04|
|yyyy.MM.dd HH:mm||for values like:||2001.07.04 23:55|
|EEE h:mm a||for values like:||Sat 9:33 PM|
|yyyy-MM-dd'T'HH:mm:ss.SSSZ||for values like:||2001-07-04T12:08:56.235-0700|
|yyyy-MM-dd'T'HH:mm:ss.SSSXXX||for values like:||2001-07-04T12:08:56.235-07:00|
- For a further information see the full Java documentation, including additional date pattern symbols such as "D" for "day of year".
Time Zone Issues
Databases record data using the time zone specified for that database. The database could be located anywhere in the world. In addition, the database may or may not reflect daylight savings time adjustments, even locally. If the data in the data set does not reflect daylight savings time, i.e. runs on GMT, and you select BST British summer time as a time zone for your data, Omniscope (and Java) will report invalid dates/times for some records. This occurs when daylight savings time adjustments 'skip over' one hour after midnight on specific dates. To fix this problem, you must isolate the offending times, and manually advance them by 1 hour.
Specifying time zones
The DATETOTEXT and TEXTTODATE functions allow you to specify time zones. Valid formats are as follows:
"GMT-08:00" or "GMT-8".
Importing Epoch/UNIX/POSIX dates & times
Epoch (or UNIX or POSIX) time is a system for describing points in time, defined as the number of (milli) seconds elapsed since midnight Coordinated Universal Time (UTC) of January 1, 1970, not counting leap seconds. Omniscope will import dates and times in this format if they are first read in as integer numbers. Once your data is imported as integer, in Data > Manage fields change the data type to Date & Time and select the option at the bottom Convert milliseconds since 1970 into dates. Omniscope uses milliseconds, so if your data is in seconds, multiply the values by 1000 using a formula column, then specify the Date & Time display format you wish to use.