I just learned that Ubuntu Noble (24.04) decided to intentionally split the tzdata package.  Old-style links such as US/Eastern are no longer included by default, but are available in the tzdata-legacy package instead.

Just thought I'd share.  I wonder if other distributions / platforms / libraries will follow suit.  What do y'all think?

See:
https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/2058249
https://stackoverflow.com/questions/78180695/unrecognized-time-zone

-Matt