adverb (r)

• at the proper time

  pada waktu yang tepat

  Example:
  She was duly apprised of the raise.
  

  Synonym:
  punctually
  

  source: wordnet30
• In a due, fit, or becoming manner; as it (anything) ought to be; properly; regularly.

  dalam tempoh, muat, atau menjadi cara; seperti itu (apapun) seharusnya; dengan benar; teratur.

  source: webster1913