diff --git a/README.md b/README.md
index 44c1dc7..7e690e2 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # RFC: TinyLogs format
 
 Status: Draft
-Last update: 2021-06-10
+Last update: 2021-06-20
 
 ## Introduction
 
@@ -32,52 +32,23 @@ It starts with a second level header (`##`), followed by a space and then `<date
 
 `<Entry Title>` format: Any text without new line.
 
-`<Date>` format: 3 possible formats for the date:
+`<Date>` format: The format extend the date format of the [gemini feed standard](https://gemini.circumlunar.space/docs/companion/subscription.gmi) (YYYY-MM-DD):
 
 ```
-YYYY-MM-DD h:m[:s] TZ
-Weekday DD Month YYYY h:m[:s] TZ # format 1-24 for hours
-Weekday DD Month YYYY h:m[:s] AM TZ # format 1-12 am/pm for hours
+YYYY-MM-DD hh:mm TZ
 ```
 
+`TZ` should either be:
+
+* A [timezone abbreviations](https://en.wikipedia.org/wiki/List_of_time_zone_abbreviations) like UTC, CEST, ET, BST, …
+* A valid UTC offset (eg: +02:00 for CEST, -06:00 for ET, …).
+
+**Nota**: Timezone abbreviations are not standards (eg BST is an abbreviations of 3 different timezone). For better comprehension for any tools, the UTC offset is usually better.
+
+If the timezone is not precised, UTC should be assumed.
+
 Entries should be in order from newest to oldest.
 
-**YYYY-MM-DD h:m[:s] TZ**
-
-Seconds are optional.
-
-example:
-```
-2006-01-02 15:04:05 MST
-2006-01-02 15:04 MST
-```
-
-
-**Weekday DD Month YYYY h:m[:s] TZ**
-
-* Weekday should be in 3 letters format (eg: Mon for Monday).
-* Month should be in 3 letters format (eg: Jan for January).
-* Hours should be in 1-24 format.
-* Seconds are optional.
-
-example:
-```
-Mon 02 Jan 2006 15:04:05 MST
-Mon 02 Jan 2006 15:04 MST
-```
-
-**Weekday DD Month YYYY h:m[:s] am TZ**
-
-* Weekday should be in 3 letters format (eg: Mon for Monday).
-* Month should be in 3 letters format (eg: Jan for January).
-* Hours should be in 1-12 format.
-* Seconds are optional.
-
-example:
-```
-Mon 02 Jan 2006 03:04:05 PM MST
-Mon 02 Jan 2006 03:04 PM MST
-```
 
 `<Content>` format: Any text without 2 new lines.
 
@@ -85,10 +56,10 @@ Each entry must be separated with 2 new lines (ie paragraph break).
 
 Example:
 ```
-## Mon 07 Jun 2021 10:44:26 PM CEST
+## 2021-06-20 20:40 +0200
 A small thought to share.
 
-## Sun 06 Jun 2021 11:44:26 AM CEST
+## 2021-06-20 20:30 CEST
 A first tinylog entry
 ```
 
@@ -116,6 +87,7 @@ Example:
 author: @bacardi55
 author: @bacardi55@gmi.bacardi55.io
 ```
+
 `<emoji>` format: emoji [emoji description]. The description is optional.
 
 Example: