"on a specified day" is correct and usable in written English.
You can use the phrase to indicate that something will happen on a specific day of a particular event or timeframe. For example: "We will be hosting the event on a specified day closer to the holiday season."
Here's the way it works: An organization does a mailing inviting members to shop at Bloomingdale's on a specified day.
Participants were invited to participate through a personal letter requesting them to attend a survey center on a specified day, fasting, between 7 30 and 11 00 am.
Phone calls were made to participants once per week on a specified day and the call for that week was not repeated if the participant did not answer.
In order to limit selection bias (ie, selective enrolment of vaccinated children), participating centres were asked to enrol ILI cases on a specified day of the week (up to three or four consecutive cases per week) blind to vaccination status.
A piloted, standardized questionnaire, with both definite and open-ended questions, was distributed to all registered medical students (from 1 st to 7 th year of medical education) on a specified day, during agreed lecture periods, in April and May of 1999 (see Figure 2).
The Company picks up, transports, sorts, handles, stores and delivers documents, parcels, and freight worldwide by a. Shipments are either dilivered the same day, the next day or on a specified day, as specified by the customer and depending on the destination of delivery.
If built on one of the upcoming Metacoin platforms like Counterparty, these tokens can be made "callable" at a contractually specified price on a contractually specified day.
To control for this, we limited our analysis to respondents who performed an operations-based exercise using the designated exercise scenario, on the specified day.
Le Pen specified Monday that neither she nor Salvini plan to rely on Bannon for help. .
Obama did not specify Thursday what actions he might take, citing an ongoing investigation.
Starting with the maximum number of drinks (Greenfield et al. 2006) respondents report having consumed on 1 day during a specified time period (e.g., the past month or year), they are asked how often they have drunk progressively fewer drinks per day during the same time period.
