Unfortunately, for some reason the feature seemed to have disappeared when Google Calendar was bumped up to version 5.0.
Within the APK file, we’ve found strings and the actual code that will be used to implement the feature (meaning, it’s not just there to prepare for a future release, but rather should already be fully functioning) that were not present in prior versions of the Google Calendar app.
Failed to snooze the reminder Snooze Reminder snoozed for %s, %s Next week In 10 minutes Later this week Snooze to… Later today Tomorrow This weekend Indeed, if you notice within these strings there are indications that you will be able to select from multiple times until which the notification will be snoozed.
Furthermore, the reason we believe the feature will be coming sooner rather than later is due to the existence of classes and methods found within the decompiled APK such as SnoozeActivity.smali and especially SnoozeFindTimeAsyncTask.smali which both directly indicate the ability to manually select a time until which to snooze your notification.
Unfortunately, though, the returning snooze capability in Calendar doesn’t seem to be as robust as the snooze feature in Google’s Inbox which allows you to select a particular location until which the reminder is snoozed.