Easy to return there. - Can scroll indefinitely vertically. - Convenient to confirm schedule that crossed the moon. Sync event; By iPhone's default setting, calendar event synchronization is “Events 1 Month Back” If you want to see more past events, please change the synchronization to "All Events" etc. You can change from iPhone's settings application. Settings > Calendar > Sync Events 2 Weeks Back Events 1 Month Back Events 3 Month Back Events 6 Month Back All Events