can't adapt type 'US/Eastern' at signup with PostgreSQL

query
'INSERT INTO "account_account" ("user_id", "timezone", "language") VALUES (%s, %s, %s)'
self

args
(4, , u'en')
e
ProgrammingError("can't adapt type 'US/Eastern'",)

Start at the signup path and the INSERT into account_account shown in the report, then trace how the timezone value reaches the PostgreSQL adapter. Reproduce signup with US/Eastern and inspect the account timezone handling. Done means signup persists that timezone without the ProgrammingError and existing timezone behavior remains intact.

Written by the indexing model from the issue text.