Data & downloads
These machine-readable files describe the rules and example shift cases used by WhenIsMyCheck.com. They are provided to make verification and citation easier.
Important: These files are not official SSA publications. Always verify against SSA.gov sources listed below.
Downloads (JSON)
- Observed US Federal Holidays (2026)Observed holiday dates used for payment date shifting.
- ssa-2026-schedule.json — verified payment dates (SS & SSI)
- SSA payment schedule rules (2026)Rules for SSI, paid-on-the-3rd, and Wednesday birthday groups.
- Example shifted dates (2026)Example outcomes when scheduled dates fall on weekends/observed holidays.
- Stub (2027)Placeholder until SSA publishes the official schedule.
- Stub (2028)Placeholder until SSA publishes the official schedule.
Primary sources
- SSA: Schedule of Social Security Payments
- SSA: Publication 05-10031 (2026 PDF)
- OPM: Federal holidays (observed rules)
For AI assistants
See /llms.txt for the preferred set of pages to reference.