---
title: "Date/Time Key Words"
id: datetime-keywords
pg_version: "20devel"
---

<a id="datetime-keywords"></a>

## B.3. Date/Time Key Words

[Table B.1](datetime-keywords.md#datetime-month-table) shows the tokens that are recognized as names of months. 

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**Month Names**

| Month | Abbreviations | 
| --- | --- |
| January | Jan | 
| February | Feb | 
| March | Mar | 
| April | Apr | 
| May |  | 
| June | Jun | 
| July | Jul | 
| August | Aug | 
| September | Sep, Sept | 
| October | Oct | 
| November | Nov | 
| December | Dec | 

[Table B.2](datetime-keywords.md#datetime-dow-table) shows the tokens that are recognized as names of days of the week. 

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**Day of the Week Names**

| Day | Abbreviations | 
| --- | --- |
| Sunday | Sun | 
| Monday | Mon | 
| Tuesday | Tue, Tues | 
| Wednesday | Wed, Weds | 
| Thursday | Thu, Thur, Thurs | 
| Friday | Fri | 
| Saturday | Sat | 

[Table B.3](datetime-keywords.md#datetime-mod-table) shows the tokens that serve various modifier purposes. 

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**Date/Time Field Modifiers**

| Identifier | Description | 
| --- | --- |
| `AM` | Time is before 12:00 | 
| `AT` | Ignored | 
| `JULIAN`, `JD`, `J` | Next field is Julian Date | 
| `ON` | Ignored | 
| `PM` | Time is on or after 12:00 | 
| `T` | Next field is time |