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diff --git a/vendor/sabre/vobject/lib/Recur/RRuleIterator.php b/vendor/sabre/vobject/lib/Recur/RRuleIterator.php
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@@ -0,0 +1,921 @@
+<?php
+
+namespace Sabre\VObject\Recur;
+
+use DateTimeInterface;
+use DateTimeImmutable;
+use Iterator;
+use Sabre\VObject\DateTimeParser;
+use Sabre\VObject\InvalidDataException;
+use Sabre\VObject\Property;
+
+/**
+ * RRuleParser.
+ *
+ * This class receives an RRULE string, and allows you to iterate to get a list
+ * of dates in that recurrence.
+ *
+ * For instance, passing: FREQ=DAILY;LIMIT=5 will cause the iterator to contain
+ * 5 items, one for each day.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class RRuleIterator implements Iterator {
+
+ /**
+ * Creates the Iterator.
+ *
+ * @param string|array $rrule
+ * @param DateTimeInterface $start
+ */
+ function __construct($rrule, DateTimeInterface $start) {
+
+ $this->startDate = $start;
+ $this->parseRRule($rrule);
+ $this->currentDate = clone $this->startDate;
+
+ }
+
+ /* Implementation of the Iterator interface {{{ */
+
+ function current() {
+
+ if (!$this->valid()) return;
+ return clone $this->currentDate;
+
+ }
+
+ /**
+ * Returns the current item number.
+ *
+ * @return int
+ */
+ function key() {
+
+ return $this->counter;
+
+ }
+
+ /**
+ * Returns whether the current item is a valid item for the recurrence
+ * iterator. This will return false if we've gone beyond the UNTIL or COUNT
+ * statements.
+ *
+ * @return bool
+ */
+ function valid() {
+
+ if (!is_null($this->count)) {
+ return $this->counter < $this->count;
+ }
+ return is_null($this->until) || $this->currentDate <= $this->until;
+
+ }
+
+ /**
+ * Resets the iterator.
+ *
+ * @return void
+ */
+ function rewind() {
+
+ $this->currentDate = clone $this->startDate;
+ $this->counter = 0;
+
+ }
+
+ /**
+ * Goes on to the next iteration.
+ *
+ * @return void
+ */
+ function next() {
+
+ // Otherwise, we find the next event in the normal RRULE
+ // sequence.
+ switch ($this->frequency) {
+
+ case 'hourly' :
+ $this->nextHourly();
+ break;
+
+ case 'daily' :
+ $this->nextDaily();
+ break;
+
+ case 'weekly' :
+ $this->nextWeekly();
+ break;
+
+ case 'monthly' :
+ $this->nextMonthly();
+ break;
+
+ case 'yearly' :
+ $this->nextYearly();
+ break;
+
+ }
+ $this->counter++;
+
+ }
+
+ /* End of Iterator implementation }}} */
+
+ /**
+ * Returns true if this recurring event never ends.
+ *
+ * @return bool
+ */
+ function isInfinite() {
+
+ return !$this->count && !$this->until;
+
+ }
+
+ /**
+ * This method allows you to quickly go to the next occurrence after the
+ * specified date.
+ *
+ * @param DateTimeInterface $dt
+ *
+ * @return void
+ */
+ function fastForward(DateTimeInterface $dt) {
+
+ while ($this->valid() && $this->currentDate < $dt) {
+ $this->next();
+ }
+
+ }
+
+ /**
+ * The reference start date/time for the rrule.
+ *
+ * All calculations are based on this initial date.
+ *
+ * @var DateTimeInterface
+ */
+ protected $startDate;
+
+ /**
+ * The date of the current iteration. You can get this by calling
+ * ->current().
+ *
+ * @var DateTimeInterface
+ */
+ protected $currentDate;
+
+ /**
+ * Frequency is one of: secondly, minutely, hourly, daily, weekly, monthly,
+ * yearly.
+ *
+ * @var string
+ */
+ protected $frequency;
+
+ /**
+ * The number of recurrences, or 'null' if infinitely recurring.
+ *
+ * @var int
+ */
+ protected $count;
+
+ /**
+ * The interval.
+ *
+ * If for example frequency is set to daily, interval = 2 would mean every
+ * 2 days.
+ *
+ * @var int
+ */
+ protected $interval = 1;
+
+ /**
+ * The last instance of this recurrence, inclusively.
+ *
+ * @var DateTimeInterface|null
+ */
+ protected $until;
+
+ /**
+ * Which seconds to recur.
+ *
+ * This is an array of integers (between 0 and 60)
+ *
+ * @var array
+ */
+ protected $bySecond;
+
+ /**
+ * Which minutes to recur.
+ *
+ * This is an array of integers (between 0 and 59)
+ *
+ * @var array
+ */
+ protected $byMinute;
+
+ /**
+ * Which hours to recur.
+ *
+ * This is an array of integers (between 0 and 23)
+ *
+ * @var array
+ */
+ protected $byHour;
+
+ /**
+ * The current item in the list.
+ *
+ * You can get this number with the key() method.
+ *
+ * @var int
+ */
+ protected $counter = 0;
+
+ /**
+ * Which weekdays to recur.
+ *
+ * This is an array of weekdays
+ *
+ * This may also be preceeded by a positive or negative integer. If present,
+ * this indicates the nth occurrence of a specific day within the monthly or
+ * yearly rrule. For instance, -2TU indicates the second-last tuesday of
+ * the month, or year.
+ *
+ * @var array
+ */
+ protected $byDay;
+
+ /**
+ * Which days of the month to recur.
+ *
+ * This is an array of days of the months (1-31). The value can also be
+ * negative. -5 for instance means the 5th last day of the month.
+ *
+ * @var array
+ */
+ protected $byMonthDay;
+
+ /**
+ * Which days of the year to recur.
+ *
+ * This is an array with days of the year (1 to 366). The values can also
+ * be negative. For instance, -1 will always represent the last day of the
+ * year. (December 31st).
+ *
+ * @var array
+ */
+ protected $byYearDay;
+
+ /**
+ * Which week numbers to recur.
+ *
+ * This is an array of integers from 1 to 53. The values can also be
+ * negative. -1 will always refer to the last week of the year.
+ *
+ * @var array
+ */
+ protected $byWeekNo;
+
+ /**
+ * Which months to recur.
+ *
+ * This is an array of integers from 1 to 12.
+ *
+ * @var array
+ */
+ protected $byMonth;
+
+ /**
+ * Which items in an existing st to recur.
+ *
+ * These numbers work together with an existing by* rule. It specifies
+ * exactly which items of the existing by-rule to filter.
+ *
+ * Valid values are 1 to 366 and -1 to -366. As an example, this can be
+ * used to recur the last workday of the month.
+ *
+ * This would be done by setting frequency to 'monthly', byDay to
+ * 'MO,TU,WE,TH,FR' and bySetPos to -1.
+ *
+ * @var array
+ */
+ protected $bySetPos;
+
+ /**
+ * When the week starts.
+ *
+ * @var string
+ */
+ protected $weekStart = 'MO';
+
+ /* Functions that advance the iterator {{{ */
+
+ /**
+ * Does the processing for advancing the iterator for hourly frequency.
+ *
+ * @return void
+ */
+ protected function nextHourly() {
+
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval . ' hours');
+
+ }
+
+ /**
+ * Does the processing for advancing the iterator for daily frequency.
+ *
+ * @return void
+ */
+ protected function nextDaily() {
+
+ if (!$this->byHour && !$this->byDay) {
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval . ' days');
+ return;
+ }
+
+ if (!empty($this->byHour)) {
+ $recurrenceHours = $this->getHours();
+ }
+
+ if (!empty($this->byDay)) {
+ $recurrenceDays = $this->getDays();
+ }
+
+ if (!empty($this->byMonth)) {
+ $recurrenceMonths = $this->getMonths();
+ }
+
+ do {
+ if ($this->byHour) {
+ if ($this->currentDate->format('G') == '23') {
+ // to obey the interval rule
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval - 1 . ' days');
+ }
+
+ $this->currentDate = $this->currentDate->modify('+1 hours');
+
+ } else {
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval . ' days');
+
+ }
+
+ // Current month of the year
+ $currentMonth = $this->currentDate->format('n');
+
+ // Current day of the week
+ $currentDay = $this->currentDate->format('w');
+
+ // Current hour of the day
+ $currentHour = $this->currentDate->format('G');
+
+ } while (
+ ($this->byDay && !in_array($currentDay, $recurrenceDays)) ||
+ ($this->byHour && !in_array($currentHour, $recurrenceHours)) ||
+ ($this->byMonth && !in_array($currentMonth, $recurrenceMonths))
+ );
+
+ }
+
+ /**
+ * Does the processing for advancing the iterator for weekly frequency.
+ *
+ * @return void
+ */
+ protected function nextWeekly() {
+
+ if (!$this->byHour && !$this->byDay) {
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval . ' weeks');
+ return;
+ }
+
+ if ($this->byHour) {
+ $recurrenceHours = $this->getHours();
+ }
+
+ if ($this->byDay) {
+ $recurrenceDays = $this->getDays();
+ }
+
+ // First day of the week:
+ $firstDay = $this->dayMap[$this->weekStart];
+
+ do {
+
+ if ($this->byHour) {
+ $this->currentDate = $this->currentDate->modify('+1 hours');
+ } else {
+ $this->currentDate = $this->currentDate->modify('+1 days');
+ }
+
+ // Current day of the week
+ $currentDay = (int)$this->currentDate->format('w');
+
+ // Current hour of the day
+ $currentHour = (int)$this->currentDate->format('G');
+
+ // We need to roll over to the next week
+ if ($currentDay === $firstDay && (!$this->byHour || $currentHour == '0')) {
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval - 1 . ' weeks');
+
+ // We need to go to the first day of this week, but only if we
+ // are not already on this first day of this week.
+ if ($this->currentDate->format('w') != $firstDay) {
+ $this->currentDate = $this->currentDate->modify('last ' . $this->dayNames[$this->dayMap[$this->weekStart]]);
+ }
+ }
+
+ // We have a match
+ } while (($this->byDay && !in_array($currentDay, $recurrenceDays)) || ($this->byHour && !in_array($currentHour, $recurrenceHours)));
+ }
+
+ /**
+ * Does the processing for advancing the iterator for monthly frequency.
+ *
+ * @return void
+ */
+ protected function nextMonthly() {
+
+ $currentDayOfMonth = $this->currentDate->format('j');
+ if (!$this->byMonthDay && !$this->byDay) {
+
+ // If the current day is higher than the 28th, rollover can
+ // occur to the next month. We Must skip these invalid
+ // entries.
+ if ($currentDayOfMonth < 29) {
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval . ' months');
+ } else {
+ $increase = 0;
+ do {
+ $increase++;
+ $tempDate = clone $this->currentDate;
+ $tempDate = $tempDate->modify('+ ' . ($this->interval * $increase) . ' months');
+ } while ($tempDate->format('j') != $currentDayOfMonth);
+ $this->currentDate = $tempDate;
+ }
+ return;
+ }
+
+ while (true) {
+
+ $occurrences = $this->getMonthlyOccurrences();
+
+ foreach ($occurrences as $occurrence) {
+
+ // The first occurrence thats higher than the current
+ // day of the month wins.
+ if ($occurrence > $currentDayOfMonth) {
+ break 2;
+ }
+
+ }
+
+ // If we made it all the way here, it means there were no
+ // valid occurrences, and we need to advance to the next
+ // month.
+ //
+ // This line does not currently work in hhvm. Temporary workaround
+ // follows:
+ // $this->currentDate->modify('first day of this month');
+ $this->currentDate = new DateTimeImmutable($this->currentDate->format('Y-m-1 H:i:s'), $this->currentDate->getTimezone());
+ // end of workaround
+ $this->currentDate = $this->currentDate->modify('+ ' . $this->interval . ' months');
+
+ // This goes to 0 because we need to start counting at the
+ // beginning.
+ $currentDayOfMonth = 0;
+
+ }
+
+ $this->currentDate = $this->currentDate->setDate(
+ (int)$this->currentDate->format('Y'),
+ (int)$this->currentDate->format('n'),
+ (int)$occurrence
+ );
+
+ }
+
+ /**
+ * Does the processing for advancing the iterator for yearly frequency.
+ *
+ * @return void
+ */
+ protected function nextYearly() {
+
+ $currentMonth = $this->currentDate->format('n');
+ $currentYear = $this->currentDate->format('Y');
+ $currentDayOfMonth = $this->currentDate->format('j');
+
+ // No sub-rules, so we just advance by year
+ if (empty($this->byMonth)) {
+
+ // Unless it was a leap day!
+ if ($currentMonth == 2 && $currentDayOfMonth == 29) {
+
+ $counter = 0;
+ do {
+ $counter++;
+ // Here we increase the year count by the interval, until
+ // we hit a date that's also in a leap year.
+ //
+ // We could just find the next interval that's dividable by
+ // 4, but that would ignore the rule that there's no leap
+ // year every year that's dividable by a 100, but not by
+ // 400. (1800, 1900, 2100). So we just rely on the datetime
+ // functions instead.
+ $nextDate = clone $this->currentDate;
+ $nextDate = $nextDate->modify('+ ' . ($this->interval * $counter) . ' years');
+ } while ($nextDate->format('n') != 2);
+
+ $this->currentDate = $nextDate;
+
+ return;
+
+ }
+
+ // The easiest form
+ $this->currentDate = $this->currentDate->modify('+' . $this->interval . ' years');
+ return;
+
+ }
+
+ $currentMonth = $this->currentDate->format('n');
+ $currentYear = $this->currentDate->format('Y');
+ $currentDayOfMonth = $this->currentDate->format('j');
+
+ $advancedToNewMonth = false;
+
+ // If we got a byDay or getMonthDay filter, we must first expand
+ // further.
+ if ($this->byDay || $this->byMonthDay) {
+
+ while (true) {
+
+ $occurrences = $this->getMonthlyOccurrences();
+
+ foreach ($occurrences as $occurrence) {
+
+ // The first occurrence that's higher than the current
+ // day of the month wins.
+ // If we advanced to the next month or year, the first
+ // occurrence is always correct.
+ if ($occurrence > $currentDayOfMonth || $advancedToNewMonth) {
+ break 2;
+ }
+
+ }
+
+ // If we made it here, it means we need to advance to
+ // the next month or year.
+ $currentDayOfMonth = 1;
+ $advancedToNewMonth = true;
+ do {
+
+ $currentMonth++;
+ if ($currentMonth > 12) {
+ $currentYear += $this->interval;
+ $currentMonth = 1;
+ }
+ } while (!in_array($currentMonth, $this->byMonth));
+
+ $this->currentDate = $this->currentDate->setDate(
+ (int)$currentYear,
+ (int)$currentMonth,
+ (int)$currentDayOfMonth
+ );
+
+ }
+
+ // If we made it here, it means we got a valid occurrence
+ $this->currentDate = $this->currentDate->setDate(
+ (int)$currentYear,
+ (int)$currentMonth,
+ (int)$occurrence
+ );
+ return;
+
+ } else {
+
+ // These are the 'byMonth' rules, if there are no byDay or
+ // byMonthDay sub-rules.
+ do {
+
+ $currentMonth++;
+ if ($currentMonth > 12) {
+ $currentYear += $this->interval;
+ $currentMonth = 1;
+ }
+ } while (!in_array($currentMonth, $this->byMonth));
+ $this->currentDate = $this->currentDate->setDate(
+ (int)$currentYear,
+ (int)$currentMonth,
+ (int)$currentDayOfMonth
+ );
+
+ return;
+
+ }
+
+ }
+
+ /* }}} */
+
+ /**
+ * This method receives a string from an RRULE property, and populates this
+ * class with all the values.
+ *
+ * @param string|array $rrule
+ *
+ * @return void
+ */
+ protected function parseRRule($rrule) {
+
+ if (is_string($rrule)) {
+ $rrule = Property\ICalendar\Recur::stringToArray($rrule);
+ }
+
+ foreach ($rrule as $key => $value) {
+
+ $key = strtoupper($key);
+ switch ($key) {
+
+ case 'FREQ' :
+ $value = strtolower($value);
+ if (!in_array(
+ $value,
+ ['secondly', 'minutely', 'hourly', 'daily', 'weekly', 'monthly', 'yearly']
+ )) {
+ throw new InvalidDataException('Unknown value for FREQ=' . strtoupper($value));
+ }
+ $this->frequency = $value;
+ break;
+
+ case 'UNTIL' :
+ $this->until = DateTimeParser::parse($value, $this->startDate->getTimezone());
+
+ // In some cases events are generated with an UNTIL=
+ // parameter before the actual start of the event.
+ //
+ // Not sure why this is happening. We assume that the
+ // intention was that the event only recurs once.
+ //
+ // So we are modifying the parameter so our code doesn't
+ // break.
+ if ($this->until < $this->startDate) {
+ $this->until = $this->startDate;
+ }
+ break;
+
+ case 'INTERVAL' :
+ // No break
+
+ case 'COUNT' :
+ $val = (int)$value;
+ if ($val < 1) {
+ throw new InvalidDataException(strtoupper($key) . ' in RRULE must be a positive integer!');
+ }
+ $key = strtolower($key);
+ $this->$key = $val;
+ break;
+
+ case 'BYSECOND' :
+ $this->bySecond = (array)$value;
+ break;
+
+ case 'BYMINUTE' :
+ $this->byMinute = (array)$value;
+ break;
+
+ case 'BYHOUR' :
+ $this->byHour = (array)$value;
+ break;
+
+ case 'BYDAY' :
+ $value = (array)$value;
+ foreach ($value as $part) {
+ if (!preg_match('#^ (-|\+)? ([1-5])? (MO|TU|WE|TH|FR|SA|SU) $# xi', $part)) {
+ throw new InvalidDataException('Invalid part in BYDAY clause: ' . $part);
+ }
+ }
+ $this->byDay = $value;
+ break;
+
+ case 'BYMONTHDAY' :
+ $this->byMonthDay = (array)$value;
+ break;
+
+ case 'BYYEARDAY' :
+ $this->byYearDay = (array)$value;
+ break;
+
+ case 'BYWEEKNO' :
+ $this->byWeekNo = (array)$value;
+ break;
+
+ case 'BYMONTH' :
+ $this->byMonth = (array)$value;
+ break;
+
+ case 'BYSETPOS' :
+ $this->bySetPos = (array)$value;
+ break;
+
+ case 'WKST' :
+ $this->weekStart = strtoupper($value);
+ break;
+
+ default:
+ throw new InvalidDataException('Not supported: ' . strtoupper($key));
+
+ }
+
+ }
+
+ }
+
+ /**
+ * Mappings between the day number and english day name.
+ *
+ * @var array
+ */
+ protected $dayNames = [
+ 0 => 'Sunday',
+ 1 => 'Monday',
+ 2 => 'Tuesday',
+ 3 => 'Wednesday',
+ 4 => 'Thursday',
+ 5 => 'Friday',
+ 6 => 'Saturday',
+ ];
+
+ /**
+ * Returns all the occurrences for a monthly frequency with a 'byDay' or
+ * 'byMonthDay' expansion for the current month.
+ *
+ * The returned list is an array of integers with the day of month (1-31).
+ *
+ * @return array
+ */
+ protected function getMonthlyOccurrences() {
+
+ $startDate = clone $this->currentDate;
+
+ $byDayResults = [];
+
+ // Our strategy is to simply go through the byDays, advance the date to
+ // that point and add it to the results.
+ if ($this->byDay) foreach ($this->byDay as $day) {
+
+ $dayName = $this->dayNames[$this->dayMap[substr($day, -2)]];
+
+
+ // Dayname will be something like 'wednesday'. Now we need to find
+ // all wednesdays in this month.
+ $dayHits = [];
+
+ // workaround for missing 'first day of the month' support in hhvm
+ $checkDate = new \DateTime($startDate->format('Y-m-1'));
+ // workaround modify always advancing the date even if the current day is a $dayName in hhvm
+ if ($checkDate->format('l') !== $dayName) {
+ $checkDate = $checkDate->modify($dayName);
+ }
+
+ do {
+ $dayHits[] = $checkDate->format('j');
+ $checkDate = $checkDate->modify('next ' . $dayName);
+ } while ($checkDate->format('n') === $startDate->format('n'));
+
+ // So now we have 'all wednesdays' for month. It is however
+ // possible that the user only really wanted the 1st, 2nd or last
+ // wednesday.
+ if (strlen($day) > 2) {
+ $offset = (int)substr($day, 0, -2);
+
+ if ($offset > 0) {
+ // It is possible that the day does not exist, such as a
+ // 5th or 6th wednesday of the month.
+ if (isset($dayHits[$offset - 1])) {
+ $byDayResults[] = $dayHits[$offset - 1];
+ }
+ } else {
+
+ // if it was negative we count from the end of the array
+ // might not exist, fx. -5th tuesday
+ if (isset($dayHits[count($dayHits) + $offset])) {
+ $byDayResults[] = $dayHits[count($dayHits) + $offset];
+ }
+ }
+ } else {
+ // There was no counter (first, second, last wednesdays), so we
+ // just need to add the all to the list).
+ $byDayResults = array_merge($byDayResults, $dayHits);
+
+ }
+
+ }
+
+ $byMonthDayResults = [];
+ if ($this->byMonthDay) foreach ($this->byMonthDay as $monthDay) {
+
+ // Removing values that are out of range for this month
+ if ($monthDay > $startDate->format('t') ||
+ $monthDay < 0 - $startDate->format('t')) {
+ continue;
+ }
+ if ($monthDay > 0) {
+ $byMonthDayResults[] = $monthDay;
+ } else {
+ // Negative values
+ $byMonthDayResults[] = $startDate->format('t') + 1 + $monthDay;
+ }
+ }
+
+ // If there was just byDay or just byMonthDay, they just specify our
+ // (almost) final list. If both were provided, then byDay limits the
+ // list.
+ if ($this->byMonthDay && $this->byDay) {
+ $result = array_intersect($byMonthDayResults, $byDayResults);
+ } elseif ($this->byMonthDay) {
+ $result = $byMonthDayResults;
+ } else {
+ $result = $byDayResults;
+ }
+ $result = array_unique($result);
+ sort($result, SORT_NUMERIC);
+
+ // The last thing that needs checking is the BYSETPOS. If it's set, it
+ // means only certain items in the set survive the filter.
+ if (!$this->bySetPos) {
+ return $result;
+ }
+
+ $filteredResult = [];
+ foreach ($this->bySetPos as $setPos) {
+
+ if ($setPos < 0) {
+ $setPos = count($result) + ($setPos + 1);
+ }
+ if (isset($result[$setPos - 1])) {
+ $filteredResult[] = $result[$setPos - 1];
+ }
+ }
+
+ sort($filteredResult, SORT_NUMERIC);
+ return $filteredResult;
+
+ }
+
+ /**
+ * Simple mapping from iCalendar day names to day numbers.
+ *
+ * @var array
+ */
+ protected $dayMap = [
+ 'SU' => 0,
+ 'MO' => 1,
+ 'TU' => 2,
+ 'WE' => 3,
+ 'TH' => 4,
+ 'FR' => 5,
+ 'SA' => 6,
+ ];
+
+ protected function getHours() {
+
+ $recurrenceHours = [];
+ foreach ($this->byHour as $byHour) {
+ $recurrenceHours[] = $byHour;
+ }
+
+ return $recurrenceHours;
+ }
+
+ protected function getDays() {
+
+ $recurrenceDays = [];
+ foreach ($this->byDay as $byDay) {
+
+ // The day may be preceeded with a positive (+n) or
+ // negative (-n) integer. However, this does not make
+ // sense in 'weekly' so we ignore it here.
+ $recurrenceDays[] = $this->dayMap[substr($byDay, -2)];
+
+ }
+
+ return $recurrenceDays;
+ }
+
+ protected function getMonths() {
+
+ $recurrenceMonths = [];
+ foreach ($this->byMonth as $byMonth) {
+ $recurrenceMonths[] = $byMonth;
+ }
+
+ return $recurrenceMonths;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-27 07:26:02 +0000