A week is defined as a period of seven days beginning with Sunday.
Self-employment began 14.2.98, date of application was 17.6.98. The applicant had not been self-employed for 26 weeks at the start of the week of application, so normal weekly earnings are calculated as in DMG32201. The 26 week period to which the estimate should relate is Sunday 21.6.98 to Saturday 19.12.98.