LHST is not heavily split in the current catalog, but the short label still hides the underlying IANA zone and any future policy change. The safe pattern is to write the abbreviation for humans and the zone for machines.
Australia/Lord_Howe has an upcoming offset change on April 4, 2027. After that point, LHST on this page will read a different UTC offset until the next transition, so any saved timestamp should anchor to the IANA zone rather than the abbreviation.
For precise work, the safest equivalent of LHST is the exact IANA zone used by your city or system. Australia/Lord_Howe sits at +11:00, ahead of UTC, which means daily logs in this zone reach a new calendar date before UTC does — a small detail that breaks date-based reporting if missed.
Within this single zone (Australia/Lord_Howe, +11:00), LHST is unambiguous, so the abbreviation and the IANA zone effectively interchange.