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Date and Time Properties
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When working with dates and times it is often necessary to know the current date and/or time and these values can be extracted from the server's system clock through the properties shown in the table below.
These properties are used in several of the time and date functions described below.
|
| Property |
Value |
| DateString |
Returns a String value representing the current date.
DateString = 12-21-2006 |
| Now |
Returns a Date value containing the current date and time.
Now = 12/21/2006 5:20:00 AM |
| TimeOfDay |
Returns a Date value containing the current time of day (the date is
set to 1/1/0001).
TimeOfDay = 1/1/0001 5:20:00 AM
|
| Timer |
Returns a Double value representing the number of seconds elapsed
since midnight.
Timer = 19200.1183166 |
| TimeString |
Returns a String value representing the current time of day.
TimeString = 05:20:00 |
| Today |
Returns or sets a Date value containing the current date.
Today = 12/21/2006 12:00:00 AM |
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Date Functions
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In the following table,date functions are summarized with functions described more fully below.
|
| Function |
Use |
| DateAdd() |
Returns a Date value containing a date and time value to which a
specified time interval has been added. |
| DateDiff() |
Returns a Long value specifying the number of time intervals between
two Date values. |
| DatePart() |
Returns an Integer value containing the specified component of a
given Date value. |
| DateSerial() |
Returns a Date value representing a specified year, month, and day,
with the time information set to midnight (00:00:00). |
| DateValue() |
Returns a Date value containing the date information represented by
a string, with the time information set to midnight (00:00:00). |
| Day() |
Returns an Integer value from 1 through 31 representing the day of
the month. |
| IsDate() |
Returns a Boolean value indicating whether an expression can be
converted to a date. |
| Month() |
Returns an Integer value from 1 through 12 representing the month of
the year. |
| MonthName() |
Returns a String value containing the name of the specified month. |
| WeekDay() |
Returns an Integer value containing a number representing the day of
the week. |
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Time Functions
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Time functions are summarized in the following table with functions described more fully below and several of the date functions can be applied to time measurements.
|
| Function |
Use |
| DateAdd() |
Returns a Date value containing a date and time value to which a
specified time interval has been added. |
| DateDiff() |
Returns a Long value specifying the number of time intervals between
two Date values. |
| DatePart() |
Returns an Integer value containing the specified component of a
given Date value. |
| Hour() |
Returns an Integer value from 0 through 23 representing the hour of
the day. |
| Minute() |
Returns an Integer value from 0 through 59 representing the minute
of the hour. |
| Second() |
Returns an Integer value from 0 through 59 representing the second
of the minute. |
| TimeSerial() |
Returns a Date value representing a specified hour, minute, and
second, with the date information set relative to January 1 of the year
1. |
| TimeValue() |
Returns a Date value containing the time information represented by
a string, with the date information set to January 1 of the year 1. |
|
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