Solution : https://service.sap.com/sap/support/notes/46317 (SAP Service marketplace login required)
Key words :
fields sy-datum / sy-datlo, sy-uzeit / sy-timlo, symptom time zone functionality, additional key words, -dialog operation modes, local time, prerequisites functionality, dialog mode, background jobs, pilot customers
Related Notes :
| 48984 | Default dates based in SY-DATUM instead SY-DATLO |
| 42983 | Time zones: Repairs for 2.2H/3.0D installations |
| 15913 | Timezone problems (local vs. global time) |