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dayOfMonth() : Extract Day from Date

Extract the day of the month component from a datetime value as a number (1-31).

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dayOfMonth(date)

Parameters

Parameter Type Required Description
date DateTime Yes The datetime to extract the day from

Returns

Type: Number (Integer)

The day of the month as a number from 1 to 31.

Examples

Display Day

<p>Day: {{dayOfMonth(model.date)}}</p>

Data:

doc.Params["model"] = new {
    date = new DateTime(2024, 3, 15)
};

Output:

<p>Day: 15</p>

Custom Date Format

<p>Date: {{yearOf(model.date)}}-{{padLeft(string(monthOfYear(model.date)), 2, '0')}}-{{padLeft(string(dayOfMonth(model.date)), 2, '0')}}</p>

Data:

doc.Params["model"] = new {
    date = new DateTime(2024, 3, 5)
};

Output:

<p>Date: 2024-03-05</p>

Day Range Filter

<h3>Events in First Half of Month</h3>
{{#each model.events}}
  {{#if (dayOfMonth(this.date) <= 15)}}
    <p>{{format(this.date, 'MMM dd')}}: {{this.title}}</p>
  {{/if}}
{{/each}}

Data:

doc.Params["model"] = new {
    events = new[] {
        new { date = new DateTime(2024, 3, 10), title = "Team Meeting" },
        new { date = new DateTime(2024, 3, 20), title = "Project Review" },
        new { date = new DateTime(2024, 3, 5), title = "Sprint Planning" }
    }
};

Output:

<h3>Events in First Half of Month</h3>
<p>Mar 10: Team Meeting</p>
<p>Mar 05: Sprint Planning</p>

Payment Schedule

<p>Next payment due:
{{#if (dayOfMonth(model.today) < 15)}}
  {{format(addDays(model.today, 15 - dayOfMonth(model.today)), 'MMMM dd')}}
{{else}}
  {{format(addMonths(model.today, 1), 'MMMM')}} 15
{{/if}}
</p>

Data:

doc.Params["model"] = new {
    today = new DateTime(2024, 3, 10)
};

Output:

<p>Next payment due: March 15</p>

Notes

  • Returns numeric value 1-31
  • Actual maximum depends on the month (28-31)
  • Time component is ignored
  • Useful for custom date formatting and date-based logic
  • For day of week, use dayOfWeek() function
  • For day of year, use dayOfYear() function

See Also