Oestara is also the Spring Equinox, a time of balance when day and night are equal. As with the other Equinox and the Solstices, the date of this festival may move slightly from year to year, but many will choose to celebrate it on 21 March. In keeping with the balance of the Equinox, Oestara is a time when we seek balance within ourselves. It is a time for throwing out the old and taking on the new. We rid ourselves of those things which are no longer necessary - old habits, thoughts and feelings - and take on new ideas and thoughts. This does not mean that you use this festival as a time for berating yourself about your 'bad' points, but rather that you should seek to find a balance through which you can accept yourself for what you are.
There is some debate as to whether Oestara or Imbolg was the traditional time of spring cleaning, but certainly the casting out of the old would seem to be in sympathy with the spirit of this festival and the increased daylight at this time encourages a good clean out around the home.
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Source: http://kate west"