The date and time of the iHealth View blood pressure monitor are automatically updated when you connect it to your smartphone.
The date and time need to be set before the first use or whenever the batteries are fully discharged.
*credit to Sylvain of iHealth Labs EU
https://helpcenter.ihealthlabs.eu/hc/en-gb/articles/115005938069-iHealth-View-BP7S-How-to-set-the-date-and-time