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How to Handle API Date and Time Zone Differences Between Systems

11/10/2026

Timestamps can shift or fall on different dates when systems disagree about UTC, local time, or daylight-saving rules.

Checks to make

Document the timestamp format and timezone at each API boundary, normalize storage to an agreed standard, and convert only for display. Test daylight-saving transitions and compare exact instants rather than formatted strings.

When to get help

API engineering can define consistent time handling across integrations. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.