Free tool · No account needed
Enter when you checked your shield and the remaining duration shown in the game. Calculate the estimated expiry, leave a safety buffer and save a calendar reminder. Your inputs are calculated in your browser and are not submitted by this tool to our server.
Estimated expiry = the time you checked + remaining hours and minutes. Reminder time = estimated expiry − your chosen buffer. The calculator adds elapsed time, then displays both your device’s local time and UTC.
Example: a countdown of eight hours at 22:15 UTC ends at 06:15 UTC the following day. A 30-minute buffer makes the reminder 05:45 UTC. This is an arithmetic example, not a list of shield items available in the game.
It does not read your account, activate a shield, detect attacks or confirm that protection is still active. If the countdown changes or an action cancels protection, the old estimate is no longer valid. Always check the in-game status and activation rules.
Share the date as well as the time, and include UTC to avoid confusion between time zones. Check your device clock. A daylight-saving change can shift the local expiry hour even though the elapsed duration is unchanged.