Export opens Apple Calendar with “Add All”. Your plan also stays saved on this device.
Home screen: open this page in Safari → Share → Add to Home Screen. It opens fullscreen like an app.
Calendar: tap Export → an .ics downloads → tap it in Downloads → Apple Calendar shows “Add All”. Re-exporting after changes just adds the new items; delete outdated ones in Calendar.
Safety: Apple Calendar is your durable copy. Use “Back up plan” occasionally — it saves a small file you can restore from if this device’s browser data is ever cleared.
All times editable. Wake is fixed for bedtime math.