# ACDM Abbreviations With ACDM a lot of abbreviations are used. The following table should clarify the one used with the vACDM plugin.
**Abbreviation** | **Time** | **Meaning** |
**EOBT** | Estimated Off-Block Time | Off-Block Time filed within the flightplan (planned in advanced). |
**TOBT** | Target Off-Block Time | Time where the outbound is actually ready and would **like to go offblock.** |
**TSAT** | Target Startup Approval Time | Time where the outbound is **allowed to go offblock** (+/- 5 minutes). |
**ASRT** | Actual Startup Request Time | Time where the outbound is fully ready and requested startup. |
**ASAT** | Actual Startup Approval Time | Time where startup is approved by ATC. |
**AORT** | Actual Off-Block Request Time | Time where the outbound requested offblock (pushback or taxi out). |
**AOBT** | Actual Off-Block Time | Actual Off-Block Time. |
**EXOT** | Estimated Taxi Out Time | Taxitime from the position to the assigned runway, including pushback. |
**TTOT** | Target Take-Off Time | Take-Off time based on the airport capacity. **Outbounds do not have to stick to that time!** Departure before and after is possible without any timeframe. |
**CTOT** | Calculated Take-Off Time | Time window for take-off by Eurocontrol, based on TTOT. **Take-off** is only possible at this time with **-5 to +10** minutes. Consideration of enroute and arrival capacity at destination airport, not at departure airport! |