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Well, you may give us some time, especially over the weekend. ;)
The first I think is a Muscidae, but hopefully someone with more knowledge of Calyptrates will come by a add his/her comment (Kahis?).
The second (I thought there was a different picture first, but I am not certain) makes me think of Rhigia campestris. I hope one of the true syrphidologists will confirm this.