You'll probably have to convince Google to integrate Google Calendar with Nostr...
We still need a good calendar / events app for Android. nostr:nprofile1qqsv8e5c93le8ezrmx0j6gkr6m7xhfs5wkh3r08j38uj0faeqhllu5gpz3mhxue69uhhyetvv9ujuerpd46hxtnfduq3kamnwvaz7tmwdaehgu339e682mnwv4k8xct5wvhxxmmdqywhwumn8ghj7mn0wd68yttsw43zuam9d3kx7unyv4ezumn9wsc977yn is iOS only for now.
Discussion
If the davx developers can integrate it into their product, its done.
Just opened a discussion to get them heated up https://github.com/bitfireAT/davx5-ose/discussions/1107