Translation

いついかなる時でも / ～する時はいつでも

Meaning

At any time that; whenever. Used primarily to emphasize that a condition applies regardless of the specific timing, often found in legal or highly literary contexts.

Examples

• You are free to visit the archives whensoever it is convenient for you.
  You are free to visit the archives whenever it is convenient for you.
• The committee shall meet whensoever the chairperson deems it necessary.
  The committee shall meet whenever the chairperson thinks it is necessary.