2 Appendix B. Date/Time Support
6 B.1. Date/Time Input Interpretation
7 B.2. Handling of Invalid or Ambiguous Timestamps
8 B.3. Date/Time Key Words
9 B.4. Date/Time Configuration Files
10 B.5. POSIX Time Zone Specifications
14 PostgreSQL uses an internal heuristic parser for all date/time input
15 support. Dates and times are input as strings, and are broken up into
16 distinct fields with a preliminary determination of what kind of
17 information can be in the field. Each field is interpreted and either
18 assigned a numeric value, ignored, or rejected. The parser contains
19 internal lookup tables for all textual fields, including months, days
20 of the week, and time zones.
22 This appendix includes information on the content of these lookup
23 tables and describes the steps used by the parser to decode dates and