That doesn't quite work for strictly alternating weeks because there is sometimes a 53rd "leap week" in a year and sometimes there isn't.  Best I can think of is to mark tuesday and wednesday as "unknown" or with a comment like "Alternating weeks" or "Call ahead".  If the store is using odd or even ISO week numbers and can confirm that to us then we could tag that.

So far I've come up with this:

Th-Fr 09:00-18:00; Sa 09:00-17:00; Tu-We 09:00-18:00 unknown; PH Th-Fr,Sa 10:00-17:00; PH Tu-We 10:00-17:00 unknown

Thursday -Friday not a Public holiday is open 9-18, Saturday not a public holiday is open 9-17, Tuesday-wednesday not a public holiday is unknown 9-18 , Public holiday on thursday, firday, or saturday is open 10-17, and public holiday on tuesday-wednesday is unknown 10-17

Their website also says they are cash only which is important to tag. Also they seem to be a  coffee shop first, tea chocolate, and honey being secondary.
