This is the 852nd most frequent Estonian word.
esmaspäeval
"On Monday."
The word 'esmaspäeval' specifies the time 'on Monday' in the sentence and is in the adessive case.
Esmaspäeval lähen trenni.
On Monday, I go to the training.
'Esmaspäeval' denotes the time 'on Monday' when the new project will begin.
Esmaspäeval algab uus projekt töö juures.
On Monday, a new project starts at work.
Here, 'esmaspäeval' asks specifically about the time frame 'on Monday' for the confirmation of the meeting.