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# LogiView

## Function 'day_nr'

| This function returns the count number for a chosen date. 0 is defined for 1900-01-01. This value is incremented for every additional day.
| "day_nr" is mainly used to determine the difference between two dates (in days).
| ### Syntax:
| {INT_VAR}= day_nr({DAT_EXPR})
| ### I/O parameters:
| {DAT_EXPR} | Date
| - |
| ### Return value:
| {INT_VAR} | Number of days.
| ### Example:
| Declaration of Variables
    10 DOCU_INT_1 = day_nr(date())
    20 DOCU_INT_2 = day_nr("2000-01-01 11:49:38")
    20 put(DOCU_INT_2 - DOCU_INT_1)
| Result: (date() provides the current date: 1999-08-10 11:53:27)
| Functions and commands: Date and Time