# TDUUPDATE System Variable [GstarCAD 2026](Help%20System/GSTARCAD/2026/Index.md) → [System Variables](Help%20System/GSTARCAD/2026/System%20Variables/(System%20Variables).md) → [T](Help%20System/GSTARCAD/2026/System%20Variables/T/(T).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_2026_en-US/detail/systemVariables/TDUUPDATE.html) · © Gstarsoft Co., Ltd.