9.3. Date Specifications
9.3. Date Specifications Date specifications are used to create cron-like expressions relating to time. Each field can contain a single number or a single range. Instead of defaulting to zero, any field not supplied is ignored. For example, monthdays="1" matches the first day of every month and hours="09-17" matches the hours between 9am and 5pm (inclusive). However, you cannot specify weekdays="1,2" or weekdays="1-2,5-6" since they contain multiple ranges. Table 9.4. Properties of a Date Specification Field Description id A unique name for the date hours Allowed values: 0-23 monthdays Allowed values: 0-31 (depending on month and year) weekdays Allowed values: 1-7 (1=Monday, 7=Sunday) yeardays Allowed values: 1-366 (depending on the year) months Allowed values: 1-12 weeks Allowed values: 1-53 (depending on week and year) years Year according the Gregorian calendar weekyears May differ from Gregorian years; for example, 2005-001 Ordinal is also 2005-01-01 Gregorian is also 2004-W53-6 Weekly moon Allowed values: 0-7 (0 is new, 4 is full moon).