yesterday
Ayer = yesterday in Spanish.
Geographically, if you mean the "Ayer's Rock", it is in Australia. In terms of time, "ayer" is "yesterday" in Spanish.
Ayer fue martes*. (*in spanish, days and months are not capitalized)
etabas hermosa ayer. or estabas preciosa ayer. or estabas divina ayer. or estabas muy bonita ayer.
"Ayer fue" means "yesterday was" in Spanish. It is commonly used to refer to events or actions that occurred the day before the current day.
Yesterday
Yesterday
Ayer e.g. We went to the cinema yesterday. Fuimos al cine ayer.
aner is not a Spanish word. 'ayer' means 'yesterday'
Llovió ayer
It means "yesterday was".
Le encontré ayer