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Seconds since January 1, 1970 00:00:00 UTC
Feb 2, 2026, 3:50:29 PM
2026-02-02T15:50:29.133Z
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| Description | Unix Timestamp | Human Date | Actions |
|---|---|---|---|
| Unix Epoch Start | 0 | January 1, 1970 00:00:00 UTC | |
| Y2K | 946684800 | January 1, 2000 00:00:00 UTC | |
| Unix Billion | 1000000000 | September 9, 2001 01:46:40 UTC | |
| 32-bit Overflow | 2147483647 | January 19, 2038 03:14:07 UTC (32-bit signed integer max) |
Unix timestamps are widely used in computing and serve many practical purposes:
Unix timestamps are commonly used to store date and time values efficiently in databases, allowing for fast indexing and retrieval.
Many web APIs use Unix timestamps in requests and responses to ensure time zone independence and compact data transfer.
File systems often store creation, modification, and access times as Unix timestamps for efficiency and portability.
Web applications use timestamps to manage session expiration, token validity, and other time-sensitive operations.
While Unix timestamps are widely used, they do have certain limitations:
32-bit systems store Unix time as a signed 32-bit integer, which will overflow on January 19, 2038. Systems are gradually migrating to 64-bit timestamps to address this.
Unix time doesn't account for leap seconds. When a leap second occurs, Unix time either repeats a second or skips ahead, depending on implementation.
Dates before January 1, 1970 are represented as negative numbers, which some systems may not handle correctly.
Standard Unix timestamps have one-second precision. For greater precision, some applications use millisecond timestamps (multiply by 1000).