# Whats the meaning of "gt" and "lte" in the field called "monitor.timespan"?

**URL:** <https://discuss.elastic.co/t/whats-the-meaning-of-gt-and-lte-in-the-field-called-monitor-timespan/275667>\
**Category:** Beats\
**Tags:** heartbeat\
**Created:** [June 11, 2021, 10:09am UTC](https://discuss.elastic.co/t/whats-the-meaning-of-gt-and-lte-in-the-field-called-monitor-timespan/275667 "2021-06-11T10:09:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mar-ro](https://avatars.discourse-cdn.com/v4/letter/m/90ced4/32.png) [@mar-ro](https://discuss.elastic.co/u/mar-ro)\
**Post date:** [June 11, 2021, 10:09am UTC](https://discuss.elastic.co/t/whats-the-meaning-of-gt-and-lte-in-the-field-called-monitor-timespan/275667/1 "2021-06-11T10:09:39Z")

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Hello!  
I just see in "heartbeat" index a field called "monitor.timespan" which contains the following:

```auto
{
  "lt": "2021-06-11T09:58:59.034Z",
  "gte": "2021-06-11T09:58:54.034Z"
}

```

What's the meaning of "lt" and "gte"? I would like to know if some of this dates simbolize the exactly moment when heartbeat checks the status of the monitor.  
Thanks in advance

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<div class="post-metadata">

**Author:** ![ethompson](https://avatars.discourse-cdn.com/v4/letter/e/e9bcb4/32.png) [@ethompson](https://discuss.elastic.co/u/ethompson)\
**Post date:** [June 11, 2021, 2:43pm UTC](https://discuss.elastic.co/t/whats-the-meaning-of-gt-and-lte-in-the-field-called-monitor-timespan/275667/2 "2021-06-11T14:43:18Z")

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"Less than" and "greater than or equal", so the timespan represents time between 2021-06-11 09:58:54.034 and 2021-06-11 09:59:59.034 (though not including the exact millisecond of the latter.)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 9, 2021, 4:44pm UTC](https://discuss.elastic.co/t/whats-the-meaning-of-gt-and-lte-in-the-field-called-monitor-timespan/275667/3 "2021-07-09T16:44:10Z")

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