# 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 TimeTaxitime 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!