Hashing-algorithm for dates

What would开发者_StackOverflow中文版 be a good hash-algorithm to hash dates, e.g. 24/12/09 and 31/10/89?

The dates would range from about year 1950 to 2050.

Could using the unix timestamp somehow, be possible?

You could use the number of days instead of the number of seconds since the start of the Unix Epoch. Just calculate:

<unix timestamp> / 86400