The temporal case (abbreviated TEMP) in morphology is used to indicate a time.
In the Hungarian language its suffix is -kor. For example: hétkor "at seven" or hét órakor "at seven o'clock", éjfélkor "at midnight", karácsonykor "at Christmas". This is one of the few suffixes in Hungarian to which rules of vowel harmony do not apply.
In Finnish its suffix is -lloin / -llöin. For example: milloin - when?; jolloin - when (relative pronoun); tällöin - at this time; silloin - then; tuolloin - at that time.
References
Temporal case Wikipedia(Text) CC BY-SA