FAQ: add accepted representations of datetime in the events

docs/xdr/FAQ/datetime.md

@@ -0,0 +1,51 @@
+# Datetime
+
+
+## Representation
+
+In the events, SEKOIA.IO accepts any representation of a datetime:
+
+- as a string representation:
+	- [ISO8601](https://www.iso.org/iso-8601-date-and-time-format.html) representation
+	- [RFC3339](https://www.ietf.org/rfc/rfc3339.html) representation
+	- [C-formatted datetime representation](#c-formatted) in the English locale
+- as a timestamp representation with any precision (from second precision to nanosecond precision)
+
+### C formatted
+
+The following is a list of all the format codes that the C89 standard requires.
+These work on all platforms with a standard C-based implementation.
+
+| Directive   | Meaning                                                          | Example                                      |
+|-------------|------------------------------------------------------------------|----------------------------------------------|
+| ``%a``      | Weekday                                                          | Sun, Mon, ..., Sat                           |
+| ``%A``      | Weekday full name.                                               | Sunday, Monday, ..., Saturday                |
+| ``%w``      | Weekday as a decimal number, where 0 is Sunday and 6 is Saturday | 0, 1, ..., 6                                 |
+| ``%d``      | Day of the month as a  zero-padded decimal number.               | 01, 02, ..., 31                              |
+| ``%b``      | Month as abbreviated name.                                       | Jan, Feb, ..., Dec                           |
+| ``%B``      | Month full name.                                                 | January, February, ..., December             |
+| ``%m``      | Month as a zero-padded decimal number                            | 01, 02, ..., 12                              |
+| ``%y``      | Year without century as a zero-padded decimal number.            | 00, 01, ..., 99                              |
+| ``%Y``      | Year with century as a decimal number                            | 0001, 0002, ..., 2013, 2014, ..., 9998, 9999 |
+| ``%H``      | Hour (24-hour clock) as a zero-padded decimal number.            | 00, 01, ..., 23                              |
+| ``%I``      | Hour (12-hour clock) as a zero-padded decimal number.            | 01, 02, ..., 12                              |
+| ``%p``      | AM or PM                                                         | AM, PM                                       |
+| ``%M``      | Minute as a zero-padded decimal number                           | 00, 01, ..., 59                              |
+| ``%S``      | Second as a zero-padded decimal number                           | 00, 01, ..., 59                              |
+| ``%f``      | Microsecond as a decimal number. zero-padded to 6 digits         | 000000, 000001, ..., 99999                   |
+| ``%z``      | UTC offset in the form ``±HHMM[SS[.ffffff]]``                    | (empty), 0000, 063415, -030712.345216        |
+| ``%Z``      | Time zone name                                                   | (empty), UTC, GMT                            |
+| ``%j``      | Day of the year as a zero-padded decimal number                  | 001, 002, ..., 366                           |
+| ``%U``      | Week number of the year as a zero-padded decimal number          | 00, 01, ..., 53                              |
+| ``%W``      | Week number of the year as a zero-padded decimal number          | 00, 01, ..., 53                              |
+
+## Timezone 
+
+The datetime must satisfy one of the following conditions:
+
+- a string representation with a timezone (like ISO8601 or RFC3339 strings)
+- a string representation or a timestamp representation together with a timezone in the event
+- a string representation or a timestamp representation in the UTC timezone
+
+
+

docs/xdr/features/collect/ingestion_methods/index.md

@@ -28,3 +28,7 @@ To push your events through our HTTP log collector, you have to `POST` your logs
 ## Cloud & SaaS integration
 
 Sekoia.io is also able to retrieve logs and data from cloud platforms, such as Microsoft Azure, Amazon Web Services or Google Cloud.
+
+## Datetime representation in the events
+
+SEKOIA.IO accepts any representation of a datetime; see [Datetime representation](../../../FAQ/datetime.md) for more details.

mkdocs.yml

@@ -313,6 +313,7 @@ nav:
       - Facing issues with logs collection: xdr/FAQ/Log_collection_Troubleshoot.md
     - Rules: xdr/FAQ/Rules_qa.md
     - Sekoia.io Endpoint agent: xdr/FAQ/SEKOIA_Endpoint_Agent.md
+    - Datetime representation: xdr/FAQ/datetime.md
   - Develop:
     - Quickstart: xdr/develop/quickstart.md
     - Guides: