New tubes and tyres rules out the possibility of a sharp thing embedded in the rubber.
Look closely at the hole and figure out what side its on.
|The same side as the valve
||Spoke/nipple poking through rim tape
Rim tape moved off spoke-hole
|Remove tape and file point smooth
Slide rimtape back into place, or replace.
|Outer rolling surface
||Sharp thing embedded in tyre
||Invert tyre and look in that quadrant.
Use a bright light and a pick
|Small twin holes about 10mm apart
||Snake bite - riding at too low pressure
||Increase tyre's air pressure
|Ragged flappy exploded look
||Hernia - tyre has a large hole/cut, tube pokes out
||Install boot inside the tyre, and buy a new tyre soon.
|Within 10mm of valve
||Sharp edges in rim
||Deburr rim's valve hole
|Single cut on "side"
||Pinched tube during installation
||Work on your technique
|Seams in tube peel apart
||Perished rubber, old age, poor storage
There is also a possibility of tube having a manufacturing defect too.
Aside - some technique here can help too. Always put the tyre on in the same place, with the logo at the valve stem, and correctly matching any rotation markers. This helps a lot with isolating the area causing the puncture, gives you less tyre to search.