| The \ expression can be any valid expression as long as it resolves to a epoch timestamp (seconds or milliseconds), or to datetime objects.
It can also be a Magical Autocomplete.
The epoch timestamp can be both in seconds as well as millisecond.
| true |
| unit | It can be either **DAY** or **WEEKS** | true |
| \ | The \ expression can be any valid expression as long as it resolves to a number.
The value by which you want to add or substract days/weeks from the startDate.
| true |
### Returns
`integer` - If the **startDate** is of type **integer** (both milliseconds and seconds)
`datetime` - If the **startDate** is of type **datetime**
## Examples
### Timestamp in epoch (seconds)
```json
{
"$addDate": {
"startDate": 1709796918,
"unit": "DAY",
"amount": 1
}
}
```
The above expression returns **1709883318**.
### Timestamp in epoch (milliseconds)
```json
{
"$addDate": {
"startDate": 1709796918000,
"unit": "DAY",
"amount": 1
}
}
```
The above expression returns **1709883318000**.
### With Magical Autocomplete
Let's say we have declared a variable `temp` in our API flow, which has a value of **6** currently.
```json
{
"$addDate": {
"startDate": datetime(2024, 03, 20),
"unit": "WEEK",
"amount": 1
}
}
```
The above expression would resolve to a result of **datetime(2024, 03, 27)**.
---
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