# TDUUPDATE System Variable [GstarCAD 2025](Help%20System/GSTARCAD/2025/Index.md) → [System Variables](Help%20System/GSTARCAD/2025/System%20Variables/(System%20Variables).md) **Function Description:** The TDUUPDATE system variable is used to store the last update or saved world standard time and date. (Read-Only) | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | Unknown | --- [Original help](https://www.gstarcad.net/help/GstarCAD_2025_en-US/detail/systemVariables/TDUUPDATE.html) · © Gstarsoft Co., Ltd.