An Effective Date Counter
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.



Under section 602(c) of the Home Rule Act, most Council acts** must be transmitted to Congress for 30-day passive review. In 40 years of Home Rule, there have only been 3 instances where Congress has exercised its power under section 602(c) to disapprove of Council acts.

Making matters worse, Congress decided that 30 days would be too easy to calculate, so Congress defined the 30-day period as follows:

the 30-calendar-day period (excluding Saturdays, Sundays, and holidays, and any day on which neither House is in session because of an adjournment sine die, a recess of more than 3 days, or an adjournment of more than 3 days) beginning on the day such act is transmitted by the Chairman to the Speaker of the House of Representatives and the President of the Senate

Until now, calculating the 30-day period required reference to several calendars and hand counts. This counter actually computes the proper date with one caveat: it is only accurate retrospectively...

That is because we can't actually know when Congress will be in recess (or not) before they go in recess (or don't). So, to write a program to let the public know when a bill actually would become a law would require a change in the Home Rule Act.

** The main exceptions are (1) acts affecting the criminal code, which have 60-day periods, and (2) Charter amendments, which have a 35-day count (though the counting method is slightly different).

API Usage

The API for effdate is available at /api/1/ and will return a JSON object.


param optional value description example
t false date transmittal date t=2014-01-01
c true 30 or 60 the number of days counted c=60
p true yes whether to use the predictive date or not p=yes

E.g., /api/1/?q=2014-01-01&c=60&p=yes


field description
transmittal date that the act was transmitted to Congress (equal to the "t" parameter)
effdate the computed effective date of the act
days_array the array of days that count toward the effective date of the act
effdate_long a formatted, computed effective date of the act
criminal whether the count was 60 days
prediction whether the count was predicted (if false, then count is "best case")