recur-on-easter.md
In almanac: Tools for Working with Recurrence Rules

cannot be set twice

Code
  recur_on_easter(x)
Condition
  Error in `recur_on_easter()`:
  ! The "easter" rule is already set and can't be set twice.

`offset` is deprecated

Code
  recur_on_easter(yearly(), offset = 2)
Condition
  Warning:
  The `offset` argument of `recur_on_easter()` is deprecated as of almanac 1.0.0.
  i Please use `roffset()` instead.
Message
  <rrule>
  * frequency: yearly
  * range: [1900-01-01, 2100-01-01]
  * easter: offset = 2

offset must be integerish

Code
  recur_on_easter(yearly(), offset = 1.5)
Condition
  Error in `recur_on_easter()`:
  ! `offset` must be a whole number, not the number 1.5.

offset cannot be NA

Code
  recur_on_easter(yearly(), offset = NA)
Condition
  Error in `recur_on_easter()`:
  ! `offset` must be a whole number, not `NA`.

offset is bounded

Code
  recur_on_easter(yearly(), offset = 367)
Condition
  Error in `recur_on_easter()`:
  ! `offset` must be a whole number between -366 and 366, not the number 367.

Code
  recur_on_easter(yearly(), offset = -367)
Condition
  Error in `recur_on_easter()`:
  ! `offset` must be a whole number between -366 and 366, not the number -367.