user567: What is "Anapanasati" day? I used to fasting on Uposatha, I became unable to do after my health got down. Last time I had asked to what to do on Uposatha Day but as I mentioned above and still unable to do; but now I've to practice seriously and go to Vihara on Anapansati day so is it same as Uposatha ? And if it is have to practice, then can I go for it in the middle stage or from the beginning? But anyhow I want to practicing and feel spirit of it when I loosed of my life. 

user4836: It's the anniversary of Buddha delivering the Anapanasati Sutta (Sutra on the Mindfulness of Breathing), an important Sutra about meditation
Reference: https://en.wikipedia.org/wiki/Uposatha#Special_uposatha_days
(Sorry but I don't know enough to answer the other questions you asked, but I hope this answer and reference helps to some extent)

567: <p>What is "Anapanasati" day? I used to fasting on Uposatha, I became unable to do after my health got down. Last time I had asked to what to do on Uposatha Day but as I mentioned above and still unable to do; but now I've to practice seriously and go to Vihara on Anapansati day so is it same as Uposatha ? And if it is have to practice, then can I go for it in the middle stage or from the beginning? But anyhow I want to practicing and feel spirit of it when I loosed of my life. </p>
 4836: <p>It's the anniversary of Buddha delivering the <em>Anapanasati Sutta</em> (Sutra on the Mindfulness of Breathing), an important Sutra about meditation</p>

<p>Reference: <a href="https://en.wikipedia.org/wiki/Uposatha#Special_uposatha_days" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Uposatha#Special_uposatha_days</a></p>

<p>(Sorry but I don't know enough to answer the other questions you asked, but I hope this answer and reference helps to some extent)</p>
