### NAME

`easter`

; da.easter.muf - print the date on which Easter Sunday falls.
### SYNOPSIS

`easter`

`year`
### DESCRIPTION

`easter`

is a MUF program which calculates and prints the date of
Easter Sunday in any year in the Gregorian calendar.
`easter`

expects a single number as its argument stating
the year to calculate easter for. The year must be at least 1583
(the first year for which Easter occurs in the Gregorian Calendar).
The century must be included.

The algorithm used to calculate the date of Easter was taken from
Practical Astronomy with your Calculator, by Peter Duffett-Smith.

### EXAMPLES

To get the date of Easter in 1996, type
easter 1996

The program returns the result, `April 7`.
### BUGS

The program only calculates Easter Sunday, not the other feasts which
depend on it. For reference, you can move the result by the following
number of days and get the other feasts.
- Shrove Tuesday precedes Easter Sunday by 47 days.
- Ash Wednesday precedes Easter Sunday by 46 days.
- Good Friday precedes Easter Sunday by 2 days.
- Easter Monday follows Easter Sunday by 1 day.
- Easter Tuesday follows Easter Sunday by 2 days.
- Ascension Thursday follows Easter Sunday by 39 days.

### AUTHOR

Deborah Pickett (<Ariel> on FDCMuck).