Change 489819 had a related patch set uploaded (by Zoranzoki21; owner: Zoranzoki21):
[operations/mediawiki-config@master] Add new throttle rule for T215839

https://gerrit.wikimedia.org/r/489819

Change 489819 merged by jenkins-bot:
[operations/mediawiki-config@master] Add new throttle rule for Kickstarter Edit-a-thon

https://gerrit.wikimedia.org/r/489819

Mentioned in SAL (#wikimedia-operations) [2019-02-19T12:56:39Z] <zfilipin@deploy1001> Synchronized wmf-config/throttle.php: SWAT: [[gerrit:489819|Add new throttle rule for Kickstarter Edit-a-thon (T215839)]] (duration: 00m 43s)

Thank you kindly

@Zoranzoki21 for future reference ET in the US winter is -0500.

$ zdump -v America/New_York | fgrep -e ':59 2019 EST' -e ':00 2018 EST'
America/New_York  Sun Nov  4 06:00:00 2018 UT = Sun Nov  4 01:00:00 2018 EST isdst=0 gmtoff=-18000
America/New_York  Sun Mar 10 06:59:59 2019 UT = Sun Mar 10 01:59:59 2019 EST isdst=0 gmtoff=-18000

but also I like to give a little buffer on each end before/after event. (this is for the person making the request as well)

It seems unwise to use shortened and potentially ambiguous timezone names like this. A UTC offset would be ideal, EST would be okay, but expecting people to correctly handle foreign DST (i.e. interpret ET to be EST or EDT correctly depending on context) sounds risky, especially around March and October/November.