The date of the photograph is estimated at about 1921.

The official date of death was estimated to be May 30, 1996.

The date given for the event has been estimated to fall around January 2 of that year.

His date of birth has been estimated from 1295 to 1290 or possibly earlier.

The actual date of composition is estimated between 1190 and 1204.

The date of the codex is estimated between 1296 and 1318.

The probable date of the temple's construction has been estimated to be between 450 and 650.

His date of birth is estimated to have been c. 1585; he was buried on 11 February 1626.

The date of his birth can only be estimated.

The actual dates of his reign can only be roughly estimated.