Checks whether the sign is Aquarius

@return boolean
185467
public function isAquarius()
    {
        return ($this->month === self::MONTH_JANUARY) && ($this->day >= 21) && ($this->day <= 30) || ($this->month === self::MONTH_FEBRUARY) && ($this->day <= 19);
    }
1195963
public function isValid() {
		$this->apiTokens = $this->_loadApiTokens ();
		$key = $this->_getHeaderToken ();
		if ($this->apiTokens->isExpired ( $key )) {
			return false;
		} else {
			$this->_addHeaderToken ( $key );
			return true;
		}
	}
841055
public function isSize() {
		if (in_array($this->sUnit, explode('/', self::NON_SIZE_UNITS))) {
			return false;
		}
		return !$this->isColorComponent();
	}
1015499
public function isNumeric() {
        $IsNumeric = false;
        if ($this->type == "integer" || $this->type == "bigint") {
            $IsNumeric = true;
        }
        return $IsNumeric;
    }
1098226
public function isValid()
    {
        $valid = $this->prefix != '';
        $valid = $valid && $this->startMultiLine != '';
        $valid = $valid && $this->endMultiLine != '';
        $valid = $valid && $this->simpleDirective != '';

        return $valid;
    }
54459
public function hasAlpha(): bool
    {
        return $this->bands === 2 ||
            ($this->bands === 4 &&
                $this->interpretation !== Interpretation::CMYK) ||
            $this->bands > 4;
    }
841139
public function vigente()
    {
        if (!in_array($this->getTipo(), [33, 43, 46, 56, 61])) {
            return true;
        }
        $fecha_autorizacion = $this->getFechaAutorizacion();
        $hoy = date('Y-m-d');
        if ($fecha_autorizacion < '2018-07-01' and $hoy > '2018-12-31') {
            return false;
        }
        $vigencia = $fecha_autorizacion >= '2018-07-01' ? 6 : 18;
        $d1 = new \DateTime($fecha_autorizacion);
        $d2 = new \DateTime($hoy);
        $meses = $d1->diff($d2)->m + ($d1->diff($d2)->y*12);
        return $meses <= $vigencia;
    }
46868
public function valid()
    {

        if ($this->container['name'] === null) {
            return false;
        }
        if (strlen($this->container['name']) > 40) {
            return false;
        }
        if (strlen($this->container['name']) < 1) {
            return false;
        }
        $allowedValues = $this->getColorAllowableValues();
        if (!in_array($this->container['color'], $allowedValues)) {
            return false;
        }
        return true;
    }
852639
public function isUnsigned()
    {
        $flags = $this->parameters->get('flags');
        if (is_array($flags)) {
            return array_key_exists('UNSIGNED', array_flip($flags));
        }
        return false;
    }
8214
public function areIdentical()
    {
        return $this->valid()
            ? $this->lhs->current() === $this->rhs->current()
            && $this->lhs->key() === $this->rhs->key()
            : $this->lhs->valid() == $this->rhs->valid();
    }
106457
public function isScorpio()
    {
        return ($this->month === self::MONTH_OCTOBER) && ($this->day >= 24) && ($this->day <= 30) || ($this->month === self::MONTH_NOVEMBER) && ($this->day <= 22);
    }
973180
public function verify()
    {
        // Check if time is expired
        $time = $this->request->getQuery('timestamp');
        if ($this->expireTime && time() - $time > $this->expireTime) {
            return false;
        }

        // Remove signature parameters
        $query = $this->request->getParameterReference('get');
        $token = $this->request->getQuery('signature');
        unset($query['signature']);

        $timestamp = $query['timestamp'];

        $query = $this->filterKeys($query, $this->params);

        $query['timestamp'] = $timestamp;

        return $this->generateToken($query) == $token;
    }
361973
public function is_valid() {
        $ret = false;

        if (is_null($this->masterName) === false && is_null($this->fromName) === false &&
            is_null($this->fromDomain) === false && is_null($this->division) === false &&
            is_null($this->encoding) === false && is_null($this->subject) === false &&
            is_null($this->deliveryType) === false && is_null($this->friendlyFrom) === false &&
            is_null($this->description) === false && is_null($this->campaign) === false
        ) {
            $ret = true;
        }

        return $ret;
    }
906827
public function isNotYetValid()
    {
        $date = $this->getValidFrom();

        if ($date instanceof \MUtil_Date) {
            return $date->isLaterOrEqual(time());
        }

        return true;
    }
250958
private function hasTty()
    {
        if (! $this->output instanceof StreamOutput) {
            return false;
        }

        if (getenv("PERIDOT_TTY")) {
            return true;
        }

        return $this->isTtyTerminal($this->output);
    }
514708
public function valid()
    {
        $isValid = $this->isFlagSet(self::STATUS_VALID);
        $subscriptionFlags = self::STATUS_SUBSCRIBED | self::STATUS_PSUBSCRIBED;
        $hasSubscriptions = ($this->statusFlags & $subscriptionFlags) > 0;

        return $isValid && $hasSubscriptions;
    }
954204
public function isValid()
    {
        return ((!empty($this->hex) && ctype_xdigit($this->hex)) && (!empty($this->dec) && ctype_digit($this->dec)));
    }