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?

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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