In BD, time is calculated as ticks

Each world has its own number of ticks per hour..example in Earth 2 there is 2 ticks per hour, meaning every tick comes after 30 mins and for E1 there is 1 tick per hour.After each tick the world gets updated when you click refresh.

When you are attacking something, there is a number of ticks for the attack to land..say u launch an ETA 5 attack on a 1 tick/hour world..It will take you 5 hours for the attack to land. if it was a 2 ticker world, it will take you 2 1/2 hours

Hope this clears your doubt

Hello!

If you have any questions about the generals basics about the game..

please check -> http://wiki.battledawn.com/index.php?title=Main_Page

It covers all FAQs and Your above asked question..
You can also send a message to the admin of the current world you are playing..
They are all kind enough to reply back fast.

fast = 1-2 days xD