The time of praying duha and other voluntary prayers is about 15 minutes after sunrise till about 10 minutes before athan of thuhur.
For those praying Friday prayer in the masjid, they can pray until the Imam comes out for the khutba,

In places there is 2 adhan for jumua prayer on Friday, If am doing duha prayer after 1st adhan , is it valid?

Prayer | October 23, 2015 3:55 am
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when praying 4 rakah fard prayer I sometimes recite attahiatu and dorud after 2 rakah mistakenly.when I remember I stop and stand up for 3rd rakah,shall I do sijda sahu or make up the whole dorud?