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307  Hours, Etc. (R)

Record Type


Input Standards

1st Indicator  Display constant controller
blank character Hours
8 No display constant generated
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
ǂa Hours (NR) Mandatory/Mandatory
ǂb Additional information (NR) Required if applicable/Required if applicable
ǂ6 Linkage (NR) System supplied/System supplied
ǂ8 Field link and sequence number (R) Optional/Optional


The chronological information identifying the days and/or times an item is available or accessible. Use primarily in records for electronic resources.

Field 307 ends with a period unless another mark of punctuation is present. In subfield ǂa a comma separates the hours information from the days of the week information. If subfield ǂa is followed by a subfield ǂb, the subfield ǂa ends in a semicolon.

For records in English, the following abbreviations may be used for the days of the week:

Days of the week Abbreviation
Sunday Su
Monday M
Tuesday Tu
Wednesday W
Thursday Th
Friday F
Saturday Sa

1st Indicator

Display constant controller

blank character

Hours. Generates the display constant Hours: before the note.

307     M-F, 9:30am-3:30pm, USA EST.
Displays as:
Hours: M-F, 9:30am-3:30pm, USA EST.

No display constant generated. No display constant generated.

307 8   Date: Dec. 1, 1993, 2:00 p.m.
Displays as:
Date: Dec. 1, 1993, 2:00 p.m.

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank.

blank character



ǂa Hours

The days and/or hours an item is available or accessible including references to A.M. and P.M. time designations and time zone, if needed.

307     M-F, 9AM-10PM.
307     Tu-F, 10-6, Sa, 1-5, USA PST.
307     M, 8:30-6:00, Tu, 8:30-7:00, W-F, 8:30-6:00; ǂb not available on weekends.
307 8   8:00 p.m. Tu-F, 5:00 and 9:00 p.m., Sa; 2:00 and 7:00 p.m., Su (all times, EST).
ǂb Additional information

Additional information about the hours of availability of the item.

307     M-F, 6:30am-9:00pm (EST); ǂb with brief interruptions for periodic update/backup of data.
307     Daily, 7am-7pm; ǂb text files only.
307     M-F, 6:30 AM to 9:30 PM, Sa, 8:00 AM to 5:00 PM, Su, 1:00 PM to 5:00 PM; ǂb closed on national holidays (all times are EST or EDT).
ǂ6 Linkage

Data that link fields when non-Latin script is entered. This subfield is system supplied and does not appear in OCLC online displays. Do not add subfield ǂ6. For more information about subfield ǂ6, see Control Subfields.

ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields.


Field 307 is not indexed.

This page last revised: April 17, 2019