Time

• Four-digit numeric representations of the calendar year (e.g., 2025)
• When referencing a specific date, include the relevant year if it’s not the current one.

Abbreviate, with no periods:

• Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec

Exception: If space allows, spell out the month when you're only using the month and the year.

• Abbreviate to three letters with no periods: Mon, Tue, Wed, Thu, Fri, Sat, Sun
• Use a comma after the day in delivery estimates

• Use an en dash with no spaces when you mean “to” or “through”
• If the range is within the same month, don’t repeat the month.
• Express a continuous period of time using an en dash without spaces (e.g., Jan 1–5, 2025)
• Repeat the year only if the range spans two years (Dec 30, 2025–Jan 2, 2026)

Abbreviate month to three letters and separate info with hyphens: Mmm-DD-YYYY

Use the full format MM/DD/YYYY for clarity (e.g., 06/22/1990)

• Typically displayed in 12-hour format with am or pm (e.g., 9am)
• Spell out in sentences. If space is tight, “hr” is acceptable (no period)
• Use 24-hour format only for technical contexts
• Work with localization partners for non-US time and date formatting

• Displayed as numeric values following a colon (e.g., 3:45pm)
• Spell out in sentences. If space is tight, “min” is acceptable (no period).

Lowercase with no periods and no space between the number and the abbreviation (e.g., 7am, 3:30pm)

• Use an en dash with no spaces when you mean “to” or “through”
• Include am/pm only once if both times are within the same half of the day (e.g., 8–11am)
• Include both if they cross noon (8am–3pm)

• Show time zones if that level of detail is needed, like when scheduling listings or promoting live events
• Use standard abbreviations as we don't observe "standard" or "daylight"
• Use a space between am/pm and the time zone
• Always capitalize both letters (no punctuation, unless it's the end of a sentence)

• Display as hours, minutes, and seconds separated by colons (e.g., 00:15:30)
• Use leading zeros for uniformity
• When there are 7 days or fewer remaining, use a single letter with the number, no spaces.
• Show the two highest markers from this list (max): days, hours, minutes, seconds
• If the second marker is "0," don't use the 3rd marker. Instead just show the first marker by itself.
• Show a date and time for when there are more than 7 days remaining

• Display consistently in 12-hour format with am/pm (e.g., 2:30pm) - HH:MM:SSam/pm
• Use numeric alignment to support quick scanning.
• Only use seconds if needed or legally required