Every other Saturday date

Can you please help,
I have a stored procedure that fires some emails to my clients.
Currently it runs twice a month.
if DATEPART(day,getdate()) in (6,21)  
Begin xxxxxxxxxxx

I need to change the date to make it run every other Saturday. (Starting  January 6th, 2018)
Jan 6th, Jan 20th, Feb 3rd, and so on.

Any help is greatly appreciated.

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Just use a datediff with the "%" operator over 14 days:

*edited, should have been "= 0"

if(datediff(dd, '2018-01-06', getdate()) % 14 = 0)

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W.E.BAuthor Commented:
Thank you very much.
Mark WillsTopic AdvisorCommented:
Good solution - well done snarf0001
Dale FyeOwner, Developing Solutions LLCCommented:
Can you explain the use of the % as an operator in this statement?

I was not aware the it could be used as anything other than a wildcard in a search.
Bill PrewIT / Software Engineering ConsultantCommented:
Dale, see if this helps, it's the modulo operator, and works like +, -, / arithmetic operators, but returning the remainder of a division...

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