2.1.3.2.1.6 Recurrence Part: BYDAY

  • Article

RFC Reference: [RFC2445] section 4.3.10

Number of Instances Allowed: Dependent on the recurrence template (section 2.1.3.2.2)

Format: Text ([RFC2445] section 4.3.8)

Brief Description: Specifies the day(s) of the week on which a recurrence occurs.

The BYDAY recurrence part MUST be a comma-delimited list of elements consisting of an optional week number followed by a mandatory 2-character code for the day of week. A BYDAY recurrence part with no week number will be termed week independent.

The following table specifies the possible values for the mandatory character code for the day of the week.

Day of Week Character Code

Meaning

SU

Sunday

MO

Monday

TU

Tuesday

WE

Wednesday

TH

Thursday

FR

Friday

SA

Saturday

The following table specifies the possible values for the optional week number.

Week Number

Meaning

-1

Last instance

1

First instance

2

Second instance

3

Third instance

4

Fourth instance