Merge pull request wled#4188 from LuisFadini/0_15_brt_timezone

Added BRT timezone

Author: softhack007

wled00/data/settings_time.htm

@@ -182,6 +182,7 @@ <h2>Time setup</h2>
 			<option value="20">AKST/AKDT (Anchorage)</option>
 			<option value="21">MX-CST</option>
 			<option value="22">PKT (Pakistan)</option>
+			<option value="23">BRT (Brasília)</option>
 		</select><br>
 		UTC offset: <input name="UO" type="number" min="-65500" max="65500" required> seconds (max. 18 hours)<br>
 		Current local time is <span class="times">unknown</span>.<br>

wled00/ntp.cpp

@@ -48,6 +48,7 @@ Timezone* tz = nullptr;
 #define TZ_ANCHORAGE           20
 #define TZ_MX_CENTRAL          21
 #define TZ_PAKISTAN            22
+#define TZ_BRASILIA            23
 #define TZ_INIT               255
 
 byte tzCurrent = TZ_INIT; //uninitialized
@@ -168,6 +169,11 @@ void updateTimezone() {
       tcrStandard = tcrDaylight;
       break;
     }
+    case TZ_BRASILIA : {
+      tcrDaylight = {Last, Sun, Mar, 1, -180};    //Brasília Standard Time = UTC - 3 hours
+      tcrStandard = tcrDaylight;
+      break;
+    }
   }
 
   tzCurrent = currentTimezone;