# E. Time and deadlines

12 pages in this book.

| Page | What it is for |
|---|---|
| [Set an execution window from an event](/recipes/e-time/event-deadline/) | I want to count two business days from the date a request was received. |
| [Check a notice before an event](/recipes/e-time/before-event/) | I want to check a presented notice date three business days before a visit. |
| [Separate a monthly step from a working-day roll](/recipes/e-time/month-end/) | I want to resolve month-end explicitly and roll a non-working cutoff separately. |
| [Separate the date of the norm from the date of the relation](/recipes/e-time/effective-and-event/) | I want to apply a new duty only after the norm enters force and only to new issuances. |
| [State a transitional exception explicitly](/recipes/e-time/transition/) | I want to keep the former permission for old relations during a transitional year. |
| [Name the date of a historical question](/recipes/e-time/historical-time/) | I want to ask about a rule on a 2024 date while keeping a later knowledge cut. |
| [Limit a legal change with immunity](/recipes/e-time/retroactivity-immunity/) | I want to protect a person from a given worsening effect after an event. |
| [Name an instant within a day](/recipes/e-time/exact-as-of/) | I want the status of a duty at the exact instant of the day on which it changes. |
| [Pin a multi-year calendar](/recipes/e-time/multi-year-calendar/) | I want to use one unchanging calendar set over the whole declared period. |
| [Choose a policy for the whole case](/recipes/e-time/one-policy-per-case/) | I want to separate calculations that need incompatible deadline policies. |
| [Fold bridges into one deadline rule](/recipes/e-time/shared-deadline/) | I want to apply a single term to two kinds of notice, not including the event day. |
| [Keep interval bounds open](/recipes/e-time/interval-boundaries/) | I want to include the start date in full and exclude the end date in full. |