To specify that an event happens "on" a certain date, use the determiner þann followed by an ordinal number (first, second, third, etc.) and the month.
| The deadline is on the first of May. | Fresturinn er þann fyrsta maí. |
Because the Icelandic word for "day" (dagur) is masculine, dates are treated as masculine objects. Þann is the masculine accusative form of sá. It pairs with an ordinal number, which must also take the masculine accusative case. Most of these end in -a (like fyrsta, þriðja, and áttunda), with the notable exception of annan (second).
| The tenant had to pay the claim on the second of January. | Leigjandinn þurfti að borga kröfuna þann annan janúar. |
Contracts and Deadlines
When dealing with formal documents like a lease agreement (leigusamningurinn), you will often need to state when they are signed (undirrita), when they are valid (gilda), or when they expire (renna út).
| Are you signing the lease agreement on the third of June? | Ert þú að undirrita leigusamninginn þann þriðja júní? |
| The contract expires on the sixth of March. | Samningurinn rennur út þann sjötta mars. |
| This term is valid if the termination notice is on the ninth of November. | Þessi skilmáli gildir ef uppsögnin er þann níunda nóvember. |
Landlords, Tenants, and Claims
Similarly, dates are crucial when describing actions between a landlord (leigusalinn) and a tenant (leigjandinn), or determining if a claim (krafan) is legal (löglegur).
| The landlord met the tenant on the eighth of September. | Leigusalinn hitti leigjandann þann áttunda september. |
| The lease agreement is legal on the first of June. | Leigusamningurinn er löglegur þann fyrsta júní. |