wiki/knowledge/hubspot/hubspot-timezone-bug-cst.md · 417 words · 2026-03-17

HubSpot Timezone Bug — 9 PM CST Instead of 9 AM

Overview

A confirmed bug in HubSpot causes scheduled social media posts to be set for 9 PM CST instead of the intended 9 AM CST. The issue appears to be related to timezone handling — likely when a user in a significantly different timezone (e.g., UTC+13/+14) schedules posts using local time inputs. The bug was surfaced during a ^[1] on 2026-03-17.

Symptoms

User sets a post time of 9 AM on a given date
HubSpot saves and displays the scheduled time as 9 PM on the same or previous date
In some cases, posts have gone out at unexpected times (e.g., 2 AM) due to similar timezone mismatches
The scheduled date can also shift by one day (e.g., appearing as the 17th when the 18th was intended), consistent with a 12–13 hour offset being applied incorrectly

Root Cause (Suspected)

HubSpot appears to be interpreting the user's local time input against the account's configured timezone (CST), resulting in a 12-hour AM/PM inversion. This is most pronounced when the scheduling user is ~13 hours ahead of CST. Whether this is a HubSpot account-level timezone setting issue or a per-user profile issue is still under investigation.

Impact

All posts scheduled by remote team members in non-CST timezones must be manually verified before they go live
Risk of client-facing posts publishing at incorrect times without manual review
Adds overhead to the review process for every scheduled post

Workaround (Current)

Manually verify the scheduled time for every post after saving. Confirm both the date and AM/PM are correct before leaving the scheduler. This is being done as standard practice until a permanent fix is in place.

Resolution Status

Open — Under Investigation

Melissa Cusumano is investigating a permanent fix via HubSpot's user or account settings. Possible avenues include:

Setting a fixed timezone at the account or user profile level in HubSpot preferences
Ensuring all scheduling users have their HubSpot profile timezone explicitly set to CST regardless of their local system timezone

No fix has been confirmed as of 2026-03-17.

Action Items

Owner	Action
Melissa Cusumano	Investigate HubSpot user/account timezone settings for a permanent fix
All scheduling users	Manually verify date and AM/PM on all scheduled posts until resolved

^[2]
^[3]
^[4]